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Browser Support

Compatibility metrics and specification levels for modern CSS layout modules.

CSS Feature	Specification	W3C Status	Chrome	Safari	Firefox	Edge
CSS Box Shadow	CSS Backgrounds & Borders L3	Recommendation	10+	5.1+	4+	12+
Multi-layer Box Shadows	CSS Backgrounds & Borders L3	Recommendation	10+	5.1+	4+	12+
CSS Custom Properties (Variables)	CSS Custom Properties L1	Recommendation	49+	9.1+	31+	15+
CSS Grid Layout	CSS Grid Layout L1	Recommendation	57+	10.1+	52+	16+
Native CSS Nesting	CSS Nesting Module L1	Candidate Recommendation	112+	16.5+	117+	112+
CSS Container Queries	CSS Containment Module L3	Candidate Recommendation	105+	16+	110+	105+
CSS color-mix() Function	CSS Color Module L5	Working Draft	111+	16.2+	88+	111+
OKLCH & OKLAB Color Spaces	CSS Color Module L4	Candidate Recommendation	111+	16.2+	113+	111+

Note: Browser support ranges refer to the initial version where the property is fully supported without a vendor prefix. For older browsers, use the CSS Postprocessor tool to automatically attach prefix dependencies like -webkit-, -moz-, or -ms- to your CSS assets.