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This custom property trick solves a common CSS problem


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Having to worry about browser support stinks, but thanks to a simple custom property trick, thereโ€™s a really easy way to create fallbacks for older browsers.

๐Ÿ”— Links

โœ… Joshโ€™s website: https://www.joshwcomeau.com/
โœ… Joshโ€™s Bluesky Post that I mention: https://bsky.app/profile/joshwcomeau.com/post/3li3r6i7dac2w
โœ… Easing Wizard: https://easingwizard.com/
โœ… Final Code from this video: https://codepen.io/kevinpowell/pen/vEYvBJd
โœ… Animating/Transitioning to and from height auto:
โœ… Iโ€™ve got free and premium courses: https://kevinpowell.co/courses

โŒš Timestamps

00:00 - Introduction
00:10 - What weโ€™re starting with
00:40 - Using the cascade to our advantage
03:00 - You canโ€™t have a fallback to the custom property as a fallback behaviour
05:33 - Joshโ€™s post
05:08 - Using custom properties to make this much easier
07:18 - Different transitions in different directions
08:12 - Other use cases for this

#css

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