<!DOCTYPE html> <title>CSS Cascade Layers: 'revert-layer' chain</title> <link rel="help" href="https://drafts.csswg.org/css-cascade-5/#revert-layer"> <link rel="author" href="mailto:xiaochengh@chromium.org"> <link rel="match" href="reference/ref-filled-green-100px-square.xht"> <style> #target { width: 100px; height: 100px; } @layer { #target { background-color: green; } } @layer { #target { background-color: red; background-color: revert-layer; } } @layer { #target { background-color: red; background-color: revert-layer; } } @layer { #target { background-color: red; background-color: revert-layer; } } </style> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div id="target"></div>