Is there really a difference between using :not(:open) and :closed? As always, it depends. Sunkanmi Fafowora explains why :closed is currently not a thing.
Should We Even Have :closed? originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
If we have a ratio that represents the sine, cosine or tangent of an angle, how can we get the original angle? This is where inverse trigonometric functions come in!
The “Most Hated” CSS Feature: asin(), acos(), atan() and atan2() originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
The extremely new framework that caught lots of attention will continue as a personal project.
Quiet UI Came and Went, Quiet as a Mouse originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
Being able to use the range syntax with container style queries — which we can do starting with Chrome 142 — means that we can compare literal numeric values as well as numeric values tokenized by custom properties or the attr() function.
The Range Syntax Has Come to Container Style Queries and if() originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
A few links about headings that I've had stored under my top hat.
Headings: Semantics, Fluidity, and Styling — Oh My! originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
Why should you use a semantic <button> instead of a generic <div>? Accessibility, right? By how exactly does it help accessibility?
Explaining the Accessible Benefits of Using Semantic HTML Elements originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
IMPACT to save 20% off today).Last time, we discussed that, sadly, according to the State of CSS 2025 survey, trigonometric functions are deemed the “Most Hated” CSS feature.
That shocked me. I may have even been a little offended, being a math nerd and …
The “Most Hated” CSS Feature: tan() originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
On mobile, people can lose their sense of context and can’t easily tell where a section begins or ends. Good small-screen design can help orient them using a variety of techniques.
Getting Creative With Small Screens originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
Can we use the <details> element as the foundation for a tabbed interface? Why yes, we can!
Pure CSS Tabs With Details, Grid, and Subgrid originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
When we change an element’s intrinsic sizing, its children are affected, too. This is something we can use to our advantage.
CSS Animations That Leverage the Parent-Child Relationship originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
A thorough but approachable lesson on JavaScript expressions excerpted JavaScript For Everyone, a complete online course offered by our friends at Piccalilli.
An Introduction to JavaScript Expressions originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
Honeypots are fields that developers use to prevent spam submissions. They still work in 2025. But you got to set a couple of tricks in place so spambots can’t detect your honeypot field.
Building a Honeypot Field That Works originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.