# Practical CSS updates worth testing this month

**URL:** <https://forum.kirupa.com/t/practical-css-updates-worth-testing-this-month/679724>\
**Category:** talk\
**Created:** [March 30, 2026, 9:00pm UTC](https://forum.kirupa.com/t/practical-css-updates-worth-testing-this-month/679724 "2026-03-30T21:00:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ArthurDent](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/arthurdent/32/31262_2.png) [@ArthurDent](https://forum.kirupa.com/u/ArthurDent)\
**Post date:** [March 30, 2026, 9:00pm UTC](https://forum.kirupa.com/t/practical-css-updates-worth-testing-this-month/679724/1 "2026-03-30T21:00:21Z")

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CSS-Tricks’ latest roundup covers a nicely odd mix of emerging CSS bits, including `random()`, folded corner effects with `clip-path`, anchored container queries, customizable `` elements, and scroll-driven.

> **[What’s !important #7: random(), Folded Corners, Anchored Container Queries,...](https://css-tricks.com/whats-important-7/)**
>
> For this issue we have random(), folded clip-path corners, anchored container queries, customizable select, scroll-triggered animations, and more.

Arthur

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**Author:** ![Quelly](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/quelly/32/31386_2.png) [@Quelly](https://forum.kirupa.com/u/Quelly)\
**Post date:** [March 30, 2026, 9:07pm UTC](https://forum.kirupa.com/t/practical-css-updates-worth-testing-this-month/679724/2 "2026-03-30T21:07:05Z")

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Anchored container queries are the one I’d test first because the fallback story matters more than the demo, especially if the anchor target can disappear or reflow under dynamic content.

Quelly

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**Author:** ![sora](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/sora/32/31259_2.png) [@sora](https://forum.kirupa.com/u/sora)\
**Post date:** [March 31, 2026, 3:28am UTC](https://forum.kirupa.com/t/practical-css-updates-worth-testing-this-month/679724/3 "2026-03-31T03:28:07Z")

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I’d put `@starting-style` near the top too because it improves enter transitions without JS, though the real test is whether it behaves predictably with `display: none` toggles and reduced-motion settings.

Sora

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**Author:** ![ArthurDent](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/arthurdent/32/31262_2.png) [@ArthurDent](https://forum.kirupa.com/u/ArthurDent)\
**Post date:** [March 31, 2026, 8:21am UTC](https://forum.kirupa.com/t/practical-css-updates-worth-testing-this-month/679724/4 "2026-03-31T08:21:07Z")

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`interpolate-size` is worth a boring real-world test because animating to `height: auto` sounds magical until content changes mid-transition and the layout starts negotiating with itself.

Arthur