If you’ve ever used a details/summary, you’ve definitely wished there was an easy way to animate them opening and closing. Well, thanks to to modern CSS, this is becoming possible! And while browser support isn’t perfect for a lot of this, it’s the perfect example of a progressive enhancement.
🔗 Links
✅ Check out Zoran’s version on his CSS Weekly channel: • Animate HTML Details & Summary Elements Us...
✅ Interpolate size browser support: https://caniuse.com/mdn-css_propertie...
✅ ::details-content browser support: https://caniuse.com/mdn-css_selectors...
✅ I’ve got free and premium courses: https://kevinpowell.co/courses
✅ Finished version: https://codepen.io/kevinpowell/pen/OJ...
⌚ Timestamps
00:00 - Introduction
00:17 - The HTML and basic styling
02:40 - Adding interpolate-size: allow-keywords
03:55 - Enable shadow DOM in your devtools
06:20 - The ::details-content pseudo-element
07:45 - Animating the height
09:30 - Fixing the closing transition
#css
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