Weekly Issue #179 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue introduces the new if() function in CSS for writing cleaner conditionals and explores how CSS is evolving into a more intelligent, logic-driven language. Discover how to create custom mobile-friendly <select> elements and design more effective notification UX. Learn to build stepped gradients with precise control, add determinism to GenAI workflows, and follow a clear self-study roadmap for mastering large language models from scratch.

Dive in and keep coding!

CSS conditionals with the new if() function - From Chrome 137 you can try out CSS inline conditionals with the if() function. if() enables a cleaner developer interface for dynamic styles like style queries and media queries, with some key differences, which you can learn about in this post.

Custom Select (that comes up from the bottom on mobile) - Custom <select> menus are a thing now, especially because they can be progressively enhanced into.

Step Gradients with a Given Number of Steps - Let’s say we want some stepped gradients like the ones below, with a certain number of steps.

Design Guidelines For Better Notifications UX - As always in design, timing matters, and so do timely notifications. Let’s explore how we might improve the notifications UX. More design patterns in our Smart Interface Design Patterns, a friendly video course on UX and design patterns by Vitaly — from complex data tables and nested filters to FAQs and error messages.

CSS Intelligence: Speculating On The Future Of A Smarter Language - CSS has evolved from a purely presentational language into one with growing logical powers — thanks to features like container queries, relational pseudo-classes, and the if() function. Is it still just for styling, or is it becoming something more?

Reliability for unreliable LLMs - Large language models are non-deterministic by design. Here's how you can inject a little bit of determinism into GenAI workflows.

Large Language Models: A Self-Study Roadmap - A complete beginner’s roadmap to understanding and building with large language models explained simply and with hands-on resources.

More news here →

🔥 Tool of the Week: Make Your Schedule Work for You

Tired of juggling DMs, email threads, and missed meetings?
Meet Cogency.io — the slickest scheduling tool built for developers, freelancers, and agencies who hate friction.

🟢 Share a single link to book meetings
🟢 Embed a sticky scheduling bubble on your site — opens in a modal, no tab switch
🟢 Syncs with Google + Microsoft calendars
🟢 Custom forms, brandable pages, and white-label options

💼 Whether you’re solo or running a team, Cogency.io replaces Calendly and then some.

→ Start free or upgrade for more power: cogency.io

Want to see it live?
📅 Schedule a quick demo with me here and I’ll walk you through how Cogency can upgrade your scheduling game.

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If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #177 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue highlights powerful updates in Chrome 138 and 139, including built-in AI APIs and new CSS layout tools like the Viewport Segments API. Learn how to create precise step gradients with just start and end values, and compare HTTP/3 vs HTTP/2 to see if the upgrade improves your site’s speed. Dive into a complete guide on when to use Flexbox vs Grid for responsive design, and see how to set up your own local coding assistant using LLaMA 4.

Dive in and keep coding!

New in Chrome 138 - Use the new built-in AI APIs to summarize, translate, or detect the language of text. Check out several new CSS functions. Adapt your web layout to target foldable devices with the Viewport Segments API....

Chrome 139 beta - This release adds six new CSS and UI features. Short-circuiting var() and attr() ...

Step Gradients with a Given Number of Steps - Before reading further, try thinking about this. You are only given the start and end steps and the rest should be obtained via linear interpolation...

HTTP/3 vs HTTP/2 Performance: Is the Upgrade Worth It? - While HTTP/2 delivered major performance gains over HTTP/1.1, the differences between HTTP/3 vs HTTP/2 are more subtle.

CSS Flexbox vs Grid: Complete Guide & When to Use Each - For the longest time, layout systems in CSS were always a bit of a pain, as using tools like floats and tables was far from ideal. But, ...

More news here →

🔥 Setting Up My Own Private Coding Assistant with LLaMA 4

This week I have been playing with setting up my private LLM to help me program. I have heard a lot about the next-gen coding assistants that could/would take our developer jobs, and so I wanted to see if there was anything to it. After doing some research, I realized that running llama4 would require a TON of processing power, aka GPUs, and so I decided to rather run the actual LLM in a cluster on runpods, and simply access it from my local environment. Here are my steps…

See the full article here

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Weekly Issue #178 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue explores the latest Chrome 138 DevTools update, featuring improved preconnect insights for performance tuning. Learn how AI is reshaping UX design roles, and dive into new CSS features like corner-shape and scoped styling. Decode complex SVG paths with curves and arcs, and use AI-assisted tools to turn screenshots into collaborative page components. Finally, follow a beginner-friendly roadmap for learning programming with a focus on data science.

More news here →

One small change, 50% more clients

One of our Cogency.io users — a coach with an already successful flow — made a single tweak that increased onboarding calls by 50% overnight.

Here’s what they did:

• Turned on Call-Back Mode (clients drop a number and time window — no scheduling back-and-forth)

• Limited scheduling to 7 days out

• Made the form accessible site-wide with a sticky bubble

No extra complexity. Just less friction and faster conversations.

The result?
A 50% increase in completed discovery calls — in 24 hours.

It’s a reminder that sometimes, the best UX is just… being the one to call.

“I used to wait for leads to find time. Now I just call them.” — Client

📎 Full story with screenshots

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Weekly Issue #177 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue takes a nostalgic look at how JavaScript was written in its early days, then jumps into modern CSS with features like gap decorations and a Nintendo Switch UI clone. Learn about recent HTML spec changes to prevent XSS, and get clarity on layout behavior like 1fr vs auto. Discover how to create dynamic navigation effects, understand ARIA more deeply, and avoid pitfalls from outdated ChatGPT solutions. Plus, unlock the full power of your browser console with a detailed guide.

Dive in and keep coding!

How JavaScript Was Written Back In the Day - Have you ever been curious how JavaScript was written back in the day? I was, so I dug into some of the early frameworks and libraries to see what I could learn.

Nintendo Switch Homescreen recreated with CSS and a li'l bit of JS - Someone across the room could hear the sounds from a device and know that it's coming from a Nintendo Switch...

A new way to style gaps in CSS - Say goodbye to border and pseudo-element hacks, and hello to CSS gap decorations. (Try it out here)

HTML spec change: escaping < and > in attributes - the HTML specification was updated to escape < and > in attributes, helping prevent mutation XSS (mXSS) vulnerabilities.

ChatGPT and the proliferation of obsolete and broken solutions - It was a lovely day on the internet when someone asked how to CSS animated gradient text like ChatGPT’s “Searching the web” and promptly got an answer...

1fr 1fr vs auto auto vs 50% 50% - I mean, obviously they aren’t literally the same, but you also probably won’t be surprised that they have different behavior as well.

What I Wish Someone Told Me When I Was Getting Into ARIA - Accessible Rich Internet Applications (ARIA) is an inevitability when working on web accessibility. That said, it’s everyone’s first time learning about ARIA at some point.

Creating The “Moving Highlight” Navigation Bar With JavaScript And CSS - A walk-through two methods of creating the “moving-highlight” navigation pattern using only plain JavaScript and CSS.

How To Use The Browser Console: An In-Depth Guide - The browser console is a powerful tool for developers working on a website. I was surprised how feature-rich the humble DevTools console tab is!

More news here →

🔥 Tool of the Week: Make Your Schedule Work for You

Tired of juggling DMs, email threads, and missed meetings?
Meet Cogency.io — the slickest scheduling tool built for developers, freelancers, and agencies who hate friction.

🟢 Share a single link to book meetings
🟢 Embed a sticky scheduling bubble on your site — opens in a modal, no tab switch
🟢 Syncs with Google + Microsoft calendars
🟢 Custom forms, brandable pages, and white-label options

💼 Whether you’re solo or running a team, Cogency.io replaces Calendly and then some.

→ Start free or upgrade for more power: cogency.io

Want to see it live?
📅 Schedule a quick demo with me here and I’ll walk you through how Cogency can upgrade your scheduling game.

📣 HELP SPREAD THE WORD 

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💬 Tweet the Deets! Share the latest with your code crew - let’s make this viral, not just a bug!

If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #176 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue highlights the latest changes to the Chrome extensions platform, along with a helpful reminder that firstChild might be whitespace. Learn how to decode SVG path commands, analyze real-world INP scores from Google’s user data, and explore building BoxLang integrations with the Bluesky API. Discover the growing importance of AI agents in automation and decision-making, run the massive DeepSeek-R1-0528 model locally, and use ChatGPT to streamline resume review and candidate shortlisting.

Dive in and keep coding!

What's happening in Chrome Extensions, June 2025 - Over the last few months, a number of highly anticipated changes have landed in the Chrome Web Store and extensions platform. Let's take a look...

firstChild can be white space - This is one of those things that bit me just the other day so I figured I’d write up. It’s a fairly simple concept and maybe it’s not something you’d be confused by, but like I said, it got me!

Decoding The SVG path Element: Line Commands - SVG is easy — until you meet path. However, it’s not as confusing as it initially looks...

Website INP Scores In 2025 - How quickly do websites respond to user input? In this article we take a look at this question based on real-user data published by Google as part of the Chrome User Experience Report...

Working with the Bluesky API in BoxLang - I've built multiple integrations with the Bluesky API, all making use of either the Node or Python SDK, but I thought I'd take a quick look at what it would take to build a BoxLang integration using the REST API.

Integrating AI agents - Positioned at the intersection of automation, decision intelligence, and data orchestration, AI agents are quickly emerging as essential tools...

Run the Full DeepSeek-R1-0528 Model Locally - DeepSeek-R1-0528 is the latest update to DeepSeek's R1 reasoning model that requires 715GB of disk space, making it one of the largest open-source models available…

How to Use ChatGPT to Review and Shortlist Resumes - Resume screening can be time-consuming, but ChatGPT offers a powerful way to speed up and improve the process.

More news here →

🔥 Tool of the Week: Make Your Schedule Work for You

Tired of juggling DMs, email threads, and missed meetings?
Meet Cogency.io — the slickest scheduling tool built for developers, freelancers, and agencies who hate friction.

🟢 Share a single link to book meetings
🟢 Embed a sticky scheduling bubble on your site — opens in a modal, no tab switch
🟢 Syncs with Google + Microsoft calendars
🟢 Custom forms, brandable pages, and white-label options

💼 Whether you’re solo or running a team, Cogency.io replaces Calendly and then some.

→ Start free or upgrade for more power: cogency.io

Want to see it live?
📅 Schedule a quick demo with me here and I’ll walk you through how Cogency can upgrade your scheduling game.

📣 HELP SPREAD THE WORD 

🚀 Spread the Code! Love what you read? Share the newsletter with your fellow devs - every recommendation helps power up the community.

💻 Sponsor the Dev Journey! Keep the bytes flowing and the newsletter growing by becoming a sponsor. Your support helps maintain this valuable resource.

💬 Tweet the Deets! Share the latest with your code crew - let’s make this viral, not just a bug!

If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #175 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue introduces courses.reviews, a platform that helps you find the best online courses without the clutter. Explore scroll-driven animations and spotlight effects in CSS for richer user interactions, and get the latest on Chrome 138’s new CSS sizing keyword. Learn practical approaches to designing for neurodiverse users and stay ahead with methods for reliably detecting third-party cookie blocking in 2025.

Dive in and keep coding!

Introducing courses.reviews - Cutting through the noise of thousands of online courses to find the ones actually worth your time.

Scroll-Driven Animations with CSS - A new addition to CSS are “Scroll-Driven Animations”. With it, you can link animations to the scroll offset of a scroll container...

Chrome 138 beta - A keyword for CSS sizing properties (for example, width, and height) that allows elements to grow to exactly…

CSS Spotlight Effect - The idea was to create an interactive effect according to the mouse position relative to elements.

Designing For Neurodiversity - Designing for neurodiversity means recognizing that people aren’t edge cases but individuals with varied ways of thinking and navigating the web.

Reliably Detecting Third-Party Cookie Blocking In 2025 - The web is mired in a struggle to eliminate third-party cookies, with the World Wide Web Consortium Technical Architecture Group leading the charge.

More news here →

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💻 Sponsor the Dev Journey! Keep the bytes flowing and the newsletter growing by becoming a sponsor. Your support helps maintain this valuable resource.

💬 Tweet the Deets! Share the latest with your code crew - let’s make this viral, not just a bug!

If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #174 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue unpacks unintuitive but powerful CSS layout tricks and highlights ten major updates from Google I/O 2025, including AI-powered DevTools and multimodal Prompt API. Learn how prototyping refines product design, bring flair to modals using the shape() function, and draw web design inspiration from Zen and the Art of Motorcycle Maintenance. Discover how to optimize image delivery for faster performance, explore 43 creative CSS menu examples, and dive into the rising trend of vibe coding. Plus, get excited about Chrome’s new built-in AI with full multimodal support.

Dive in and keep coding!

3 Unintuitive CSS Layout "Solutions" - Height 0? Wat? Shrink 0? Wat?... here are a few of my least favorite, easy to forget.

10 updates from Google I/O 2025 - CSS carousels, AI-powered DevTools, Prompt API with multimodal capabilities, and more…

The Role of Prototyping in Perfecting Product Designs - Remember the first Apple iPod? Shown in Figure 1, its sleek design and click wheel revolutionized how we listen to music.

Move Modal in on a… shape() - Years ago I did a demo where a modal was triggered open and it came flying in on a curved path. I always thought that was kinda cool. Time has chugged on...

What Zen And The Art Of Motorcycle Maintenance Can Teach Us About Web Design - Road-tripping along the line between engineering and spirituality, Robert M. Pirsig’s musings on the arts, sciences, and Quality ring as true now as they ever have.

How to Improve Image Delivery on Your Website - Improve image delivery is one of Lighthouse's new performance insights. It identifies oversized images on a web page that could be reduced in size without noticeable quality loss.

CSS Menus: 43 Creative Examples for Your Website - Menus are crucial to any website’s design, but they don’t have to be boring. With CSS, you can create dynamic, visually appealing navigation that boosts the user experience.

Vibe Coding: My Deep Dive into Tools, Techniques & Personal Takeaways - You’ve probably heard the term floating around in dev circles or on tech X. It’s one of the latest buzzwords in the software development space.

Multimodal Support in Chrome's Built-in AI - One feature that I've been excited the most about has finally been made available, multimodal prompting. This lets you...

More news here →

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If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #173 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue highlights updates to the experimental <permission> HTML element, still in Chrome’s origin trial phase. Learn how to handle layout shifts triggered by tools like Google Translate and use downloadable worksheets to launch a full design system in just 90 days. Explore a hands-on UX strategy framework that puts design teams in the driver's seat, and discover how to generate and share HAR files to streamline network debugging with ease.

Dive in and keep coding!

Enhancements to the proposed <permission> element - The proposed HTML <permission> element is still in origin trial, as the Chrome team refines it, building upon the foundation laid in our initial origin trial.

Flipping Layouts When Google Translate Swaps - Anybody can translate the website though. There are a variety of site translation tools. I don’t have any data on popularity, but...

Design System In 90 Days - Helpful PDF worksheets and tools to get the design system effort up and running — and adopted!

Building A Practical UX Strategy Framework - In my experience, most UX teams find themselves primarily implementing other people’s ideas rather than leading the conversation about user experience.

How To Generate And Open HAR Files - HAR files record network requests made in the browser and provide a way to share this debug data with developers.

More news here →

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If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #173 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue introduces JavaScript compile hints, a new V8 feature that lets you fine-tune when your code compiles for better performance. Discover how CSS parser extensions help polyfill advanced CSS features, and get the latest on the evolving <permission> element. Learn how to build localization-ready design systems, optimize document request latency, and craft intricate clip-path shapes with the new shape() function. Plus, explore Fellou AI as a bold new alternative to ChatGPT, and dive into ten essential GitHub repositories to level up your Large Language Model expertise.

Dive in and keep coding!

JavaScript compile hints: what they are and when to use them - JavaScript compile hints are a new V8 feature that lets you control when your code gets compiled.

Polyfilling CSS with CSS Parser Extensions - If you didn’t know, polyfilling CSS features is extremely hard, mainly because the CSS Parser discards...

Enhancements to the <permission> element - The HTML <permission> element is still in origin trial, as the Chrome team refines it, building upon the foundation laid...

Integrating Localization Into Design Systems - Learn how two designers tackled the challenges of building a localization-ready design system for a global audience.

Creating Flower Shapes using clip-path: shape() - You are probably familiar with clip-path: polygon(), right? A function that allows you to...

How To Optimize Document Request Latency - The HTML document request is the starting point for any page load process in the browser. Find out how poor document latency impacts website speed...

Try Fellou AI and Say Goodbye to Google and ChatGPT - If you look at the past 1 year, the browsing game has changed drastically. It all started with Perplexity and Co-pilot...

10 GitHub Repositories to Master Large Language Models - If you are not familiar with large language models (LLMs) today, you may already be falling behind in the AI revolution. Companies are...

More news here →

Start learning AI in 2025

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That’s why over 1M professionals read Superhuman AI to stay ahead.

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• Learn new AI skills you can use at work in 3 mins a day

• Become 10X more productive

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💬 Tweet the Deets! Share the latest with your code crew - let’s make this viral, not just a bug!

If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #172 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue covers GitHub Copilot’s ask, edit, and agent modes to help you integrate them more effectively into your workflow. Check out the top 10 open-source AI projects shaping the future, and learn how to build robust data-fetching architectures in React and Next.js. Dive into Chrome 137’s new CSS and AI features, sharpen your product strategy with balanced feedback, and get expert tips on launching complex projects and optimizing landing page performance. Plus, explore AI-driven chart analysis and learn how to secure your machine learning apps with FastAPI.

Dive in and keep coding!

Copilot ask, edit, and agent modes: What they do and when to use them - An introduction to the three distinct modes of GitHub Copilot and a practical guide for integrating them effectively into your workflow.

From MCP to multi-agents: The top 10 new open source AI projects on GitHub right now and why they matter - Get insights on the latest trends from GitHub experts while catching up on these exciting new projects.

Robust Data Fetching Architecture For Complex React/Next.js Apps - How I use the 'Three Layers of Data' architecture pattern for React and Next.js apps to avoid common pitfalls, tech debt, and improve performance.

Chrome 137 beta - new CSS, UI, Web API, and WebAssembly features in Chrome 137, including advanced conditional CSS with if(), improved accessibility and animation support, security and performance enhancements, and new AI-powered Rewriter and Writer APIs.

Navigating the Right Balance Between Product Vision and User Feedback - User feedback is the key to ensuring continuous product improvement. However,...

How To Launch Big Complex Projects - When was the last time your project wrapped up smoothly — no delays, no surprises, no last-minute compromises? In reality, most UX projects drift...

7 Best Practices for Improving Landing Page Performance - Looking to create landing pages that convert or want to improve the conversion rate of your existing ones?

Using AI to Analyze Chart Images - If you think about it, there's no real code needed to test what I want to test, but, I ran into an interesting issue. As part of my testing...

Securing Machine Learning Applications with Authentication and User Management - A step-by-step guide to securing a FastAPI machine learning applications' endpoints with native authentication and user management.

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💬 Tweet the Deets! Share the latest with your code crew - let’s make this viral, not just a bug!

If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #171 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This edition dives into life after Google, where one developer shares the emotional journey of losing their role. Learn how to define CSS theme variables using a JavaScript file for more dynamic styling. Get up to speed with performance improvements in Chrome 136 DevTools and explore what human-centered AI really looks like in practice. Discover the impact of HTTP requests on page speed, organize your design files more effectively, and compare Google’s Gemini 2.0 Flash with OpenAI’s o4-mini. We also highlight top specialized freelance jobs, share notes from Advent of Code 2024, and offer a prompt engineering playbook to help developers get the most out of AI.

Dive in and keep coding!

G̶o̶o̶g̶l̶e̶r̶… ex-Googler - Last night, my role at Google was eliminated. I'm quite sick to my stomach, extremely sad, and even more angry…

Creating CSS Theme Variables from a JS file - For many projects I work on it’s useful to define all of our brand colours in a JavaScript file, particularly as I work on a lot of data visualisations that use them.

What's new in DevTools, Chrome 136 - Performance panel improvements

Beyond the Hype: Getting Real with Human-Centered AI - Companies are racing to integrate artificial intelligence (AI) into every facet of their operations to streamline workflows...

Newfangled Browser Alternatives - You’ve got your classic web browsers with the biggest chunks of market share. The Statcounter website gives us a picture...

UX And Design Files Organization Template - Lost in a sea of UX files, docs, PDFs, and scattered decisions across Slack, Dropbox, Notion, and Figma? We talk a lot about organizing...

Does Making Fewer HTTP Requests Improve Page Speed? - Does it matter how many different resources your website loads? Or is it more important what each file looks like and how it fits into your website architecture?

Gemini 2.0 Flash vs o4-mini: Can Google Do Better Than OpenAI? - The AI battle in 2025 is definitely getting charged with the launch of Google’s Gemini 2.0 Flash and OpenAI’s o4-mini.

7 High Paying Specialized Freelancing Jobs - Starting freelancing can feel overwhelming, but mastering specialized, high-paying skills can help you stand out in competitive markets and secure better opportunities.

Advent of Code 2024, some notes - For four years, I tried to participate in the Advent Of Code challenge each December. While waiting for my Christmas gift, I lose myself in these puzzles...

My AI Prompt Engineering Playbook for Developers - You know by now that AI can dramatically speed up your development process (when used correctly. But the key is knowing how to communicate with the AI properly

More news here →

Start learning AI in 2025

Keeping up with AI is hard – we get it!

That’s why over 1M professionals read Superhuman AI to stay ahead.

• Get daily AI news, tools, and tutorials

• Learn new AI skills you can use at work in 3 mins a day

• Become 10X more productive

Sign up and start mastering AI

📣 HELP SPREAD THE WORD 

🚀 Spread the Code! Love what you read? Share the newsletter with your fellow devs - every recommendation helps power up the community.

💻 Sponsor the Dev Journey! Keep the bytes flowing and the newsletter growing by becoming a sponsor. Your support helps maintain this valuable resource.

💬 Tweet the Deets! Share the latest with your code crew - let’s make this viral, not just a bug!

If you have built anything that you’d like to share with the community, get with me on X @dailysandbox_ 😀 

Weekly Issue #170 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

Learn how to make your Markdown images adapt seamlessly to GitHub's dark and light modes for a better visual experience. Improve web typography with text-wrap: pretty and explore the new CSS shape() function for scalable, responsive designs. Understand the importance of true keyboard navigability and how thoughtful error messages can improve user experience. Automate messy text data cleaning in Python with just five easy steps. Plus, dive into the rise of MCP servers, the real meaning of Agentic AI, and how Google's Agent2Agent protocol is changing AI collaboration.

Dive in and keep coding!

How to make your images in Markdown on GitHub adjust for dark mode and light mode - When you want your images to look good in Markdown on GitHub, you might have to adjust for the UI around them.

Better typography with text-wrap pretty - bring a new level of polish to type on the web by leveraging paragraph-based algorithms to solve long-standing problems.

The CSS shape() function provides a new way to author shapes that can adapt and scale with mixed proportions based on the size of the element.

What Does It Really Mean For A Site To Be Keyboard Navigable - Keyboard navigation is a vital aspect of accessible web design, and a detail-oriented approach is crucial. Prioritizing keyboard navigation prioritizes the user experience for a diverse audience, extending your reach while simultaneously fostering a more inclusive web environment.

How to write error messages that actually help users rather than frustrate them - create error messages that help users recover quickly and continue their path through your products and services.

Automating text data cleaning in Python makes it easy to fix messy data by removing errors and organizing it, in just 5 simple steps...

10 Awesome MCP Servers - I just discovered the hype around MCP (Model Context Protocol) servers and decided to experience it for myself...

Developers are hearing a lot about Agentic AI lately, that’s for certain. What’s less certain is what the term actually means and whether it’s A Thing you need to learn about

Google recently introduced a protocol called Agent2Agent (A2A) that addresses how LLM-powered systems can communicate with each other in enterprise environments.

Use shape() for responsive clipping - Before Chrome 135 and Safari 18.4, you had to choose between responsive polygons, and more complex shapes that are not responsive using SVG paths. With the new shape() function...

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Weekly Issue #169 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

Discover Google's Agent2Agent protocol that allows AI agents from different platforms to collaborate effectively. Learn how to optimize images for GitHub's theme variations using the <picture> element. Build a dynamic local events calendar utilizing Diffbot’s Knowledge Graph API. Explore the new Float16Array in JavaScript for efficient data management. Understand the importance of fact-checking in AI with insights from Vectara’s CEO, Amr Awadallah.

Dive in and keep coding!

🤖 Google AI Agent Collaboration Across Enterprises - The newly launched Agent2Agent (A2A) protocol allows AI agents, regardless of their vendors or frameworks, to collaborate seamlessly, enhancing productivity, reducing costs, and driving innovation.

Adapting Images for Dark and Light Modes on GitHub - GitHub supports both dark and light modes, and developers can ensure their images look great in both themes by using the <picture> element. This method dynamically switches images based on the user's color scheme, preventing issues like bright backgrounds or clashing colors when toggling between dark and light modes.

📆 Build a Localized Events Calendar with Diffbot’s Knowledge Graph - Building a localized events calendar can be a challenge, relying on scattered sources like Facebook and Reddit. However, using Diffbot's Knowledge Graph API, a centralized, dynamic calendar can be created to pull in local events, providing a more reliable and efficient solution.

Understanding Float16Array in JavaScript - Float16Array is a new addition to JavaScript’s TypedArrays, designed to store 16-bit (2-byte) floating point numbers. This new array type complements existing arrays like Int8Array, Uint8Array, Float32Array, and Float64Array, offering developers more options for efficient data storage.

Not all AI is generative: Efficient scheduling with mathematics - Efficiently solving a complex scheduling problem using simulated annealing.

How do you fact-check an AI? - Amr Awadallah, founder and CEO of Vectara, discusses the advancements in retrieval-augmented generation (RAG), the importance of fact-checking and accurate data in AI development, and how Vectara’s Mockingbird model aims to reduce hallucinations in AI applications.

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Weekly Issue #168 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue is packed with clever CSS tricks, JavaScript insights, and bold takes on where AI is heading—click around, learn something cool, and get inspired to build smarter.

Dive in and keep coding!

🎨 CSS Bursts with Conic Gradients - make stripes with CSS gradients pretty easily. It’s that classic thing where you don’t fade a color from one to another, you just switch colors by having two colors share the same “color stop”.

🔥 You Can Now Use attr() Like a Variable in CSS?! - this highly-requested feature gives you ability to supercharge attributes and use them in CSS beyond simple strings! You can reference colors, numbers, percentages, named values as custom identifiers, and more. Here are some more examples that explore modern attr() in CSS and use it to define the type of value you want to use - First Look at The Modern attr()

🧪 CSS Progress Bars Without JS? This attr() Trick Is Genius - customize a progress element based on the progression. A single-element implementation without JavaSript.

🧵 The Chaos of Circular Dependencies… Untangled - Breaking Down Circular Dependencies in JavaScript: A Hands-On Guide That Finally Make Sense (Kinda).

👶 Young Devs Are Owning Open-Source AI—Here’s What That Means - Open-source AI: Are younger developers leading the way? - A generational divide: experience and open-source AI adoption.

💡 The Web Share & Clipboard APIs Are Underrated Power Tools - Simplify sharing with built-in APIs and progressive enhancement - two really useful web platform tools available for use that have fantastic browser support: the Web Share API and the Clipboard API.

📆 Format Dates Like a Human (in Vanilla JS) - No more libraries just to get “April 7, 2025.”

🎙️ 🚀 AI Bubble or Revolution? Two CEOs Spill the Future - interview with HumanX CEO Stefan Weitz and Crunchbase CEO Jager McConnell to talk about where the money is in the AI space, where most enterprise AI strategies fall short, how companies can build business models when AI tech is evolving so quickly, and why this is AI’s microservices moment.

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Weekly Issue #167 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

• Explore the latest in web development with new CSS Mixins and Functions, enhanced Chrome DevTools, and strategies for leveraging user feedback to improve user experience. Discover the future of CSS-in-JS, streamline your workflows with Google Sheets integration, and harness the power of Gemini 2.5 Pro for complex coding challenges.

Dive in and keep coding!

CSS Mixins are ready for experimentation - CSS Mixins and Functions are both ready for you to hack on 🤯. I think of functions as returning a value and mixins as a way to apply a chunk of styles.

What's new in DevTools, Chrome 135 - This version brings a number of improvements to the Performance panel.

Leveraging 3 Types of User Feedback to Create Better User Experiences - While you must create products that meet your business goals, you must also ensure that your products address users’ needs.

Expanding CSS Shadow Effects - Design principles tell us a shadow is conveys that light is hiding an object, which casts the shadow behind it, giving us a sense of depth.

Is CSS-in-JS still a thing? - The most popular CSS-in-JS library has gone into maintenance mode. Here’s what the lead maintainer of styled-components had to say...

How to get LLMs to do what you want - Learn how to write effective prompts and troubleshoot results in this installment of our GitHub for Beginners series.

How Does Chrome Prioritize Image Requests - In this article, we'll explore how Chrome determines the request priority for images.

How To Argue Against AI-First Research - Companies have been turning their attention to “synthetic,” AI-driven user testing.

HubSpot Forms in a Next.js + Prismic - Integrating forms effectively is critical to the success of modern marketing websites. The form experience is arguably...

5 Jobs AI Can’t Replace According to Bill Gates - Bill Gates recently appeared on The Tonight Show with Jimmy Fallon. They talked about his new book Source Code, his childhood, and 50 years of Microsoft.

🎙️ Boots on the ground: Holistic AI and Audioshake at HumanX - Interview with Raj Patel, AI transformation lead at Holistic AI, and then chats with Audioshake cofounder and CEO Jessica Powell.

7 GitHub Projects to Master Machine Learning - Machine learning operations, commonly referred to as MLOps, is a vast field that can sometimes feel overwhelming. However, ...

A Guide to Integrating ChatGPT with Google Sheets - We are in an era where professionals across different industries rely on tools like Google Sheets to manage information efficiently.

Gemini 2.5 Pro: The Best AI for Coding Challenges and Complex Prompts - Google’s Gemini 2.5 Pro is a groundbreaking AI model with advanced reasoning, coding, and multimodal features.

Reanimating the CSS Day Buttons - A well-animated button can capture attention, reinforce branding, and make the experience more enjoyable. Take a look at the existing buttons and explore ways to enhance them with modern CSS techniques.

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Weekly Issue #166 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

• Master GitHub tools for secure vulnerability disclosure.

• Explore innovative CSS techniques for customizing HTML elements and solving background overlaps.

• Delve into AI integration insights from HumanX 2025 and learn simple ways to implement 3D content with Three.js.

Dive in and keep coding!

A maintainer’s guide to vulnerability disclosure: GitHub tools to make it simple - A step-by-step guide for open source maintainers on how to handle vulnerability reports confidently from the start.

Create an HTML dialog when you click an image. - HTML <dialog> trick so you can click images to view them larger without breaking the design.

A new way to draw separators in CSS - Drawing separator lines between various sections of a webpage is a common design technique, which can help to structure the content and make it more readable, as well as more aesthetically pleasing.

🎙️An AI future free of slop - a talk with Ryan at HumanX 2025 on how Stack is integrating AI into its public platform, the enormous importance of a high-quality knowledge base in your AI journey, how AI tools are empowering junior developers to build better software, and much more.

Cascii v1.0.3 (beta) - a web-based ASCII and Unicode diagram builder written in vanilla Javascript.

LLM Agents are simply Graph (Tutorial For Dummies) - Have you been hearing about "LLM agents" everywhere but feel lost in all the technical jargon? You're not alone!

A fluid CSS methodology - Fluid CSS methodologies have completely transformed my approach to web integration by improving the responsive aspect and simplifying maintenance.

The <select> element can now be customized with CSS - From Chrome 135, web developers and designers can finally unite on an accessible, standardized and CSS styleable <select> element on the web.

A Deep Dive into the Inline Background Overlap Problem - how to get a semitransparent background following some inline text with padding, but without the overlap problem that can be seen in the image below.

Previewing Content Changes In Your Work With document.designMode - You probably already know that you can use developer tools in your browser to make on-the-spot changes to a webpage — simply click...

Passing Data into SVG (Linked Parameters Workaround) - a hacky technique that allows us to pass some data from CSS to SVG and use it to adjust colors or almost anything else.

threejs.org - an easy-to-use, lightweight, cross-browser, general-purpose 3D library that tries to make it as easy as possible to get 3D content on a webpage.

Layered Text Headers - Being able to control the paint-order in CSS means you can push the stroke behind the fill, fixing awkward issues with ruining letterform readability.

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XOR

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Daily Issue #165 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

Explore the impact of cookie consent banners on site performance, learn how to optimize JavaScript for modern browsers, and discover innovative development tools like Ultimate Express and BeeAI Framework.

Dive in and keep coding!

Cookie Consent Banners, Page Speed, And Core Web Vitals - Many websites display cookie banners when visitors first arrive. As a result, website performance for the first visit is often impacted.

Avoid serving legacy JavaScript to modern browsers - If your JavaScript code is using polyfills or certain types of transforms, like some found within Babel for example, you may be serving unnecessary code to modern browsers.

ultimate-express - The Ultimate Express. Fastest http server with full Express compatibility, based on µWebSockets.

Independent and Dependent Variables - The independent variable is the cause, while the dependent variable is the effect.

BeeAI Framework is a production-ready framework to build AI agents in both Python and Typescript

The 5:1 Rule: Effective Performance Reviews For High-Performing Teams - Research reveals the ideal ratio of positive to negative feedback within high performing teams

Electrobun - aims to be a complete solution-in-a-box for building, updating, and shipping ultra fast, tiny, and cross-platform desktop applications written in Typescript.

QuickJS - a small and embeddable JavaScript engine. It aims to support the latest ECMAScript specification

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Daily Issue #164 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

Explore the latest improvements in the Chrome DevTools Performance panel, designed to enhance navigation and filtering for a more efficient debugging experience. Delve into the essentials of web scraping, a critical skill for data scientists aiming to harness the vast data streams fueling AI advancements. Discover how to automate CI/CD and more using GitHub Issues and Actions, turning your repository into a dynamic platform for streamlined development processes. Learn how to integrate AI agents with Streamlit and Langchain to create applications that not only respond to queries but also perform complex computations and data visualizations. Additionally, find out how to utilize Markdown to create effective task checklists within GitHub, simplifying project management. Listen to Maria Hutt discuss the challenges and strategies of enticing web developers to embrace mobile development through the Ionic framework. This newsletter is packed with actionable insights and innovative tools for developers looking to push the boundaries of their technical expertise.

Dive in and keep coding!

Improved navigation and filtering in the DevTools Performance panel - We're excited to announce more upgrades to how you can interact with the DevTools Performance panel.

Web Scraping Fundamentals for Data Science - Data is the lifeblood of data science and the backbone of the AI revolution.

Automate CI/CD (and more!) with GitHub Issues and Actions - A look into building IssueOps workflows on GitHub to do everything from CI/CD to handling approvals and more.

Building Agentic Application Using Streamlit and Langchain - By combining AI agents, you can build an application that not only answers questions and searches the internet but also performs computations and visualizes data effectively.

🎥 How to create checklists in Markdown for easier task tracking - Ever wondered how to create checklists in your GitHub repositories, Issues, and PRs? Make task lists more manageable in your GitHub repositories, issues, and pull requests.

🎙️ Building a framework to lure web devs to mobile - Maria Hutt interview about building the Ionic mobile framework.

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Daily Issue #163 | Subscribe to DS | Daily Sandbox Pro

Hello Developers!

This issue sheds light on recent changes to Chrome's remote debugging features that enhance security for developers. Dive into the complexities of inline background overlaps in CSS and how box-decoration-break: clone; can manage opacity issues across text lines. Learn how to leverage GitHub Copilot's full suite of tools, including code completion and inline chat, to streamline your coding projects. Listen to Tillman Elser and Ryan discuss Sentry's advancements in AI for error monitoring, exploring how machine learning improves error grouping and algorithm development. Additionally, explore the possibility of creating custom gaps in flex or grid layouts with "Self Gap," and discover quick tips for generating dynamic PDFs with BoxLang. For data scientists, understand the relevance of MicroPython and its potential impact on your workflows. This newsletter is packed with technical updates and practical advice for developers and data scientists alike.

Dive in and keep coding!

Chrome for Developers - Changes to remote debugging switches to improve security.

A Deep Dive into the Inline Background Overlap Problem - box-decoration-break: clone; in CSS can help us make for interesting backgrounds across lines of text that break, but when opacity gets involved, things can get complicated.

GitHub for Beginners: Essential features of GitHub Copilot - Get the most out of Copilot with code completion, inline chat, slash commands, Copilot code review, and more.

🎙️Improving error monitoring with AI - Tillman Elser, AI/ML lead at Sentry, joins Ryan for a conversation about improving error monitoring with AI and ML. They talk through the challenges of analyzing stack traces, the innovative use of embeddings to improve error grouping, the trial-and-error process of developing algorithms, and where Sentry’s AI capabilities are headed next.

Self Gap - Thinking of a way to have a custom gap between some flex or grid items.

BoxLang Quick Tips to generate PDFs - Create dynamic and expressive PDFs.

Do I Need to Learn MicroPython as a Data Scientist? - A simple guide that tells you what you need to know about MicroPython and why you should use it as a Data Scientist.

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Daily Issue #162 | Subscribe to DS | Daily Sandbox Pro

Hey there, tech enthusiasts! 🚀

We're making a change—starting next week, our newsletter will now be sent once a week, every Tuesday! This means even more high-quality insights, coding tips, and must-know tech trends packed into each issue.

Mark your calendars, and get ready for a weekly deep dive—it’s going to be worth the wait!

Dive in and keep coding!

Enhance LLMs with Retrieval Augmented Generation - Learn how RAG curbs AI hallucinations by retrieving real-time data for context. This article explains RAG’s workflow, vector-based retrieval, and key security measures, offering a practical guide to deploying reliable and transparent LLM solutions.

How Much Are LLMs Actually Boosting Real-World Programmer Productivity? - LLM-based coding-assistance tools have been out for ~2 years now. Many developers have been reporting that this is dramatically increasing their productivity, up to 5x'ing/10x'ing it.

Photo gallery with Scroll Driven Animation - A pure CSS demo featuring view-timeline animations on grid items with scroll-triggered opacity, scaling, and rotation effects.

How to write exceptional documentation - Writing high-quality developer documentation is a challenging task. One reader visiting your site may have a tricky bug to solve, another may be looking for guidance, while a third just wants to get started.

How to Fully Automate Data Cleaning with Python in 5 Steps - Data cleaning is often seen as a manual, time-consuming process that data scientists and analysts must trudge through before getting to the "real work" of analysis.

5 AI Code Editors to Use - AI code editors are revolutionizing the way we code and build applications. Instead of digging through documentation or forums, you can simply...

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