| <!DOCTYPE html> |
| <title>CSS Custom Properties: Using revert-rule to revert to a var()</title> |
| <link rel="help" href="https://drafts.csswg.org/css-variables/#substitute-a-var"> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/10443"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| #target { |
| --green: green; |
| color: var(--green); |
| } |
| #target { |
| color: red; |
| color: revert-rule; |
| } |
| </style> |
| <div id=target> |
| </div> |
| <script> |
| test((x) => { |
| assert_true(CSS.supports('color:revert-rule')); |
| assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)'); |
| }, 'Using revert-rule to revert to a value containing var()'); |
| |
| </script> |
