| <!DOCTYPE html> |
| <title>CSS Container Queries Test: query unset style for custom property on :root should always match</title> |
| <link rel="help" href="https://drafts.csswg.org/css-conditional-5/#style-container"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="support/cq-testcommon.js"></script> |
| <style> |
| :root { container-name: --root; } |
| @container --root style(--foo: unset) { |
| #target { color: green; } |
| } |
| </style> |
| <div id="target"></div> |
| <script> |
| setup(() => assert_implements_style_container_queries()); |
| |
| test(() => { |
| assert_equals(getComputedStyle(target).color, "rgb(0, 128, 0)"); |
| }, "Match style(--foo: unset) on :root element"); |
| </script> |
