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How to make a fancy inverted border radius in CSS | by Jeroen Knol | ITNEXT
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![css-backgrounds-4] Extruding border corners (negative border-radius) · Issue #2811 · w3c/csswg-drafts · GitHub](https://user-images.githubusercontent.com/34976212/41810754-dbfa3620-7703-11e8-84e5-193d02bae2db.png "css-backgrounds-4] Extruding border corners (negative border-radius) · Issue #2811 · w3c/csswg-drafts · GitHub")
css-backgrounds-4] Extruding border corners (negative border-radius) · Issue #2811 · w3c/csswg-drafts · GitHub
How to make a fancy inverted border radius in CSS | by Jeroen Knol | ITNEXT
