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I come to bury Flash, not to praise it, writes Matt May in this excellent thread about the end of Adobe Flash. Not so long ago, web designers used Flash to create striking visuals and animations and games. But shortly after that, it began to replace HTML and CSS which caused a ton of accessibility …

Spencer Miskoviak on the Wealthfront blog: By creating custom DevTools specific to an app, they can operate at an even higher abstraction to handle things like user interactions, or debugging tracking events. While this requires building and maintaining the custom DevTools, it also means it can be tailored to the needs of the app and …

Nice site from Google (and guest contributors) with a bunch of fun demos of what Houdini can do. Plus a write-up from Una. These are all Paint API demos. Houdini is technically a group of seven things that are all pretty cool, and the Paint API is just one of them. Paint is fun, but …

Adam Argyle has a post over on web.dev digging into this. He starts with the assumption that you need to do vertical centering and horizontal centering. It’s that vertical centering that has traditionally been a bit trickier for folks, particularly when the height of the content is unknown. We have a complete guide to centering …

Heck of a year, eh? Like we do every year, I’d like to give you a huge thanks for reading CSS-Tricks, and recap the year. More downs than ups, all told. Here at CSS-Tricks, it was more of a wash. Allow me to me share some numbers, milestones, and thoughts with you about our journey …

Eleventy is increasing in popularity because it allows us to create nice, simple websites, but also — because it’s so developer-friendly. We can build large-scale, complex projects with it, too. In this tutorial we’re going to demonstrate that expansive capability by putting a together a powerful and human-friendly environment variable solution.

Me, I really dislike FOUT. I like that it’s an option, because not displaying text quickly on the web is no good. I know font-display: swap; is popular because it’s good for performance, but that FOUT stuff pains me. Matt Hobbs: If there’s one thing I’d like readers to take away from this post it’s …

The goal of Client Hints is to provide a framework for a browser when informing the server about the context in which a web experience is provided. HTTP Client Hints are a proposed set of HTTP Header Fields for proactive content negotiation in the Hypertext Transfer Protocol. The client can advertise information about itself through …

The WebKit blog details how to use individual CSS Transform properties in the latest version of Safari Technology Preview. This brings the browser in line with the CSS Transforms Module Level 2 spec, which breaks out the translate(), rotate() and scale() functions from the transform property into their own individual properties: translate, scale, and rotate.

Creating video is time consuming. A well-made 5-minute video can take hours to plan, record, and edit — and that’s before we start talking about making that video consistent with all the other videos on your site. When we took on the Jamstack Explorers project (a video-driven educational resource for web developers), we wanted to find the right balance …

Josh Comeau covers the concept of margin collapsing: This idea might sound simple, but if you’ve been writing CSS for a while, you’ve almost certainly been surprised when margins either don’t collapse, or they collapse in weird and unexpected ways. In real-world projects, all kinds of circumstances can complicate matters.

I redesigned the site! I can never think about the word redesign without also thinking about realigning, from Cameron Moll’s seminal article. I did not start from nothing. This design wasn’t a blank design canvas and empty code editor thing. I doubt any future redesign will be either. I started with what we already had …

It’s a pretty low-effort thing to get a big fancy link preview on social media. Toss a handful of specific <meta> tags on a URL and you get a big image-title-description thing. Here’s Twitter’s version of an article on this site:

Alec Pollak was little more than a junior art director cranking out print ads when he got a call that would change the path of his career. He worked at advertising agency, Grey Entertainment, later called Grey Group. The agency had spent decades acquiring some of the biggest clients in the industry. Pollak spent most …

Ask a hundred front-end developers, and most, if not all, of them will have used the box-shadow property in their careers. Shadows are enduringly popular, and can add an elegant, subtle effect if used properly. But shadows occupy a strange place in the CSS box model. They have no effect on an element’s width and …

The answer to “What is the most accessible HTML for an SVG icon?” isn’t one-size-fits all, because what an icon needs to do on a website varies. I’m partial to Heather Migliorisi’s research on all this, but I can summarize. Extremely quickly: hide it if it’s decorative, title it if it’s stand-alone, let the link …

I’ve always liked tag clouds. I like the UX of seeing what tags are most popular on a website by seeing the relative font size of the tags, popular tags being bigger. They seem to have fallen out of fashion, though you do often see versions of them used in illustrations in tools like Wordle. …

These things are so similar, I find it hard to keep them straight. This is a nice little explanation from viewBox (what a cool name and URL, I hope they keep it up). The big thing is that clipPath (the element in SVG, as well as clip-path in CSS) is vector and when it is …

Big ol’ same to Michelle Barker here: Here’s something I find myself needing to do again and again in CSS: completely covering one element with another. It’s the same CSS every time: the first element (the one that needs to be covered) has position: relative applied to it. The second has position: absolute and is positioned so that all …

Over on the Polypane blog (there’s no byline but presumably it’s Kilian Valkhof (it is)), there is a great article, Creating websites with prefers-reduced-data, about the prefers-reduced-data media query. No browser support yet, but eventually you can use it in CSS to make choices that reduce data usage. From the article, here’s one example where …

Svelte is one of the newer JavaScript frameworks and it’s rapidly rising in popularity. It’s a template-based framework, but one which allows for arbitrary JavaScript inside the template bindings; it has a superb reactivity story that’s simple, flexible and effective; and as an ahead-of-time (AOT) compiled framework, it has incredibly impressive perf, and bundle sizes. …

This article has no byline and is on a website that is even more weirdly specific than this one is, but I appreciate the trick here. A seven-column grid makes for a calendar layout pretty quick. You can let the days (grid items) fall onto it naturally, except kick the first day over to the …

Even though GitHub Readme files (typically ./readme.md) are Markdown, and although Markdown supports HTML, you can’t put <style> or <script> tags init. (Well, you can, they just get stripped.) So you can’t apply custom styles there. Or can you? You can use SVG as an <img src=”./file.svg” alt=”” /> (anywhere). When used that way, even …

Lighthouse is a free and open-source tool for assessing your website’s performance, accessibility, progressive web app metrics, SEO, and more. The easiest way to use it is through the Chrome DevTools panel. Once you open the DevTools, you will see a “Lighthouse” tab. Clicking the “Generate report” button will run a series of tests on …

Sara Soueidan digs into this HTML/UX situation. “Yes” or “no” is a boolean situation. A checkbox represents this: it’s either on or off (uh, mostly). But is a checkbox always the best UX? It depends, of course: Use radio buttons if you expect the answer to be equally distributed. If I expect the answer to …

The series is a wrap, my friends! Thanks for reading and a big special thanks to all the authors this year who shared something they have learned. Many authors really swung wide with thoughts about how we can be better and do better, which, of course, I really love. Adam showed us logical properties and, …

There’s a “C” word in web development that we don’t give enough attention to. No, I’m not talking about “continuous integration”, or even “CSS”. The “C” word I’m talking about is “constraints”. Understanding constraints is a vital part of building software that works the best it can in its targeted environment(s). Yet, the difficulty of …

Whether you use the eCommerce features on WordPress.com or use WooCommerce on your self-hosted WordPress site (like we do), you can use the WooCommerce mobile app. That’s right WooCommerce has native apps for iOS and Android. They’ve just released some nice upgrades to both, making them extra useful.

This article is for anyone interested in the emerging ecosystem of tools and technologies related to Jamstack and serverless. We’re going to use Fauna’s GraphQL API as a serverless back-end for a Jamstack front-end built with the Redwood framework and deployed with a one-click deploy on Vercel. In other words, lots to learn! By the …

My 2020 was colored by the considerable amount of time I spent analyzing data about CSS usage in the wild, for the CSS chapter of the Web Almanac, by the HTTP Archive. The results were eye-opening to me. A wake-up call of sorts. We spend so much time in the bubble of bleeding-edge tech that …