Frontend News #17: Why :is(::before, ::after) Doesn’t Work, Why You Should Switch to OKLCH, & More @CSSWeekly
Frontend News #17: Why :is(::before, ::after) Doesn’t Work, Why You Should Switch to OKLCH, & More  @CSSWeekly
Uploaded November 2025 | Updated September 2026, 1 hour ago
Find out why pseudo-elements (::before, ::after) don’t work with the ‘:is()’ pseudo-class function, what the difference between HSL and OKLCH color formats is, why you’re not writing as much code as you’d like at work, and more.

🔥 Get all Vue School’s premium courses for free: cssw.io/vue-school-free-weekend

Subscribe to my newsletters:
💌 CSS Weekly: css-weekly.com
🤖 AI Developer: aideveloperweekly.com

📖 Links / Chapters
00:00 Intro
00:29 Why :is(::before,::after) doesn't work: css-tip.com/is-before-after
02:05 OKLCH in CSS: why we moved from RGB and HSL: evilmartians.com/chronicles/oklch-in-css-why-quit-rgb-hsl
04:24 Vue School Free Weekend: cssw.io/vue-school-free-weekend
05:22 Many years on the job and I still don't get it: daverupert.com/2025/09/you-cant-drink-coffee-on-a-running-horse
06:39 a11y-dev-mode.css: gist.github.com/willmendesneto/4302de65ed6fa0e3661d3c0c08cf2a28
07:56 Backrooms - Full 3D CSS Game: codepen.io/ivorjetski/pen/NPqLLoz

Help support my channel
🪧 Buy CSS Stickers pack: stickers.css-weekly.com
☕️ Buy Me a Coffee: buymeacoffee.com/cssweekly
💖 Become a member on Patreon: patreon.com/cssweekly
👨‍🎓 Get a course: masteringlinting.com

Keep up-to-date with CSS Weekly:
🦋 Bluesky: https://bsky.app/profile/cssweekly.com/
🐦 Twitter: twitter.com/@cssweekly
🎶 TikTok: tiktok.com/@cssweekly
🎇 Instagram: instagram.com/cssweekly
📘 Facebook: facebook.com/CSSWeekly

Keep up to date with what I'm up to:
👨‍💼 Blog: zoranjambor.com
💼 LinkedIn: linkedin.com/in/zoranjambor

- Zoran Jambor
#css #frontendnews
Frontend News #17: Why :is(::before, ::after) Doesn’t Work, Why You Should Switch to OKLCH, & MoreNative Input Toggle Switch #css #htmlTailwind CSS — How To Create a Stunning Button #programmingjokesSwitch to HSL Color FormatFrontend Developer Tries Tailwind for the First TimeCSS Tips - Custom list styles with @counter-style #cssHands-On Guide to Color Fonts and @font-palette-valuesChrome DevTools Tips – Styles Pane & Elements Panel5 Default VS Code Settings You Should Tweak ImmediatelyVS Code Tips - Leverage the Outline ViewCSS Email Obfuscation - Create a Clickable LinkDo Not Disturb in Visual Studio Code?!?
CSS Weekly |

Frontend News #17: Why :is(::before, ::after) Doesn’t Work, Why You Should Switch to OKLCH, & More

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER