Uploaded March 2024 | Updated September 2026, 26 minutes ago
A detailed guide to :is() and :where() CSS pseudo-classes, explaining exactly how they work, what's the difference between them, and how they can help you simplify your CSS, along with some gotchas you should keep in mind.
Demo: codepen.io/ZoranJambor/pen/zYbgWmJ
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📖 Chapters
00:00 How :is() pseudo-class works
02:12 How to simplify selector lists using nested :is() statements
03:02 How specificity works with :is()
05:31 The difference between :is() and :where() pseudo-classes
06:53 Gotchas — :is() and :where() are forgiving07:44 Gotchas - pseudo-elements don’t work with :is() and :where()08:26 Gotchas - :is() was originally named :matches() and :any()
08:44 When to use :is() and :where() pseudo-classes
Keep up-to-date with CSS Weekly:
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Keep up to date with what I'm up to:
👨💼 Blog: zoranjambor.com
💼 LinkedIn: linkedin.com/in/zoranjambor
- Zoran Jambor
#css
A detailed guide to :is() and :where() CSS pseudo-classes, explaining exactly how they work, what's the difference between them, and how they can help you simplify your CSS, along with some gotchas you should keep in mind.
Demo: codepen.io/ZoranJambor/pen/zYbgWmJ
Subscribe to CSS Weekly Newsletter:
💌 css-weekly.com
Help support my channel
👨🎓 Get a course: masteringlinting.com
🪧 Buy a CSS sticker pack: stickers.css-weekly.com
💖 Support me on Patreon: patreon.com/cssweekly
📖 Chapters
00:00 How :is() pseudo-class works
02:12 How to simplify selector lists using nested :is() statements
03:02 How specificity works with :is()
05:31 The difference between :is() and :where() pseudo-classes
06:53 Gotchas — :is() and :where() are forgiving07:44 Gotchas - pseudo-elements don’t work with :is() and :where()08:26 Gotchas - :is() was originally named :matches() and :any()
08:44 When to use :is() and :where() pseudo-classes
Keep up-to-date with CSS Weekly:
🐦 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
