12-03-2026 11:00 via smashingmagazine.com

Beyond `border-radius`: What The CSS `corner-shape` Property Unlocks For Everyday UI

When I first started building websites, rounded corners required five background images, one for each corner, one for the body, and a prayer that the client wouldn’t ask for a different radius. Then the border-radius property landed, and the entire web collectively sighed with relief. That was over fifteen years ago, and honestly, we’ve been riding that same wave ever since. Just as then, I hope that we can look at this feature as a progressive enhancement slowly making its way to ot
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