What’s !important #7: random(), Folded Corners, Anchored Container Queries, and More
For this issue of What’s !important, we have a healthy balance of old CSS that you might’ve…
4 Reasons That Make Tailwind Great for Building Layouts
When I talk about layouts, I’m referring to how you place items on a page. The CSS…
Abusing Customizable Selects
Web browsers ship new features all the time, but what fun is it if we can’t build…
The Value of z-index
The z-index property is one of the most important tools any UI developer has at their disposal,…
The Different Ways to Select in CSS
Temani Afif recently did this exercise and I thought I’d build off of it. Some of these…
What’s !important #6: :heading, border-shape, Truncating Text From the Middle, and More
Despite what’s been a sleepy couple of weeks for new Web Platform Features, we have an issue…
Yet Another Way to Center an (Absolute) Element
sibling-index() and sibling-count() functions. There are lots of recent examples like this. Still, there is one little…
An Exploit … in CSS?!
Ok, take a deep breath. We’ll have some fun understanding this vulnerability once you make sure your…
A Complete Guide to Bookmarklets
You’re surely no stranger to bookmarks. The ability to favorite, save, or “bookmark” web pages has been…
Loading Smarter: SVG vs. Raster Loaders in Modern Web Design
I got this interesting question in an SVG workshop: “What is the performance difference between an SVG…
Potentially Coming to a Browser :near() You
Just before we wrapped up 2025, I saw this proposal for :near(), a pseudo-class that would match…
Distinguishing “Components” and “Utilities” in Tailwind
Here’s a really quick tip. You can think of Tailwind utilities as components — because you can…
Distinguishing “Components” and “Utilities” in Tailwind
Here’s a really quick tip. You can think of Tailwind utilities as components — because you can…
Spiral Scrollytelling in CSS With sibling-index()
Confession time: I’ve read about the performance benefits of scroll-timeline(), but when I see an impressive JavaScript…
Interop 2026
Interop 2026 is formally a thing. So, you know all of those wild, new CSS features we’re…
What’s !important #5: Lazy-loading iframes, Repeating corner-shape Backgrounds, and More
This issue of What’s !important is dedicated to our friends in the UK (aka me), who are…
Trying to Make the Perfect Pie Chart in CSS
Speaking of charts… When was the last time you had to use a pie chart? If you…
CSS Bar Charts Using Modern Functions
New CSS features can sometimes make it easier and more efficient to code designs we already knew…
No-Hassle Visual Studio Code Theming: Building an Extension
Years ago, when I read Sarah Drasner’s article on creating a VS Code theme, I silently thought…
What’s !important #4: Videos & View Transitions, Named Media Queries, How Browsers Work, and More
Neither Chrome, Safari, nor Firefox have shipped new features in the last couple of weeks, but fear…
Styling ::search-text and Other Highlight-y Pseudo-Elements
Chrome 144 recently shipped ::search-text, which is now one of several highlight-related pseudo-elements. This one selects find-in-page…
Responsive Hexagon Grid Using Modern CSS
Five years ago I published an article on how to create a responsive grid of hexagon shapes….
I Learned The First Rule of ARIA the Hard Way
Some time ago, I shipped a component that felt accessible by every measure I could test. Keyboard…
What’s !important #3: Popover Context Menus, @scope, New Web Platform Features, and More
The developer community hasn’t wasted any time kicking off 2026 with some really great articles, demos, and…