| <!DOCTYPE html> |
| <title>@scope - inner @supports</title> |
| <link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule"> |
| <link rel="help" href="https://drafts.csswg.org/css-conditional-3/#at-supports"> |
| <link rel="help" href="https://drafts.csswg.org/css-cascade-5/#scope-scope"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| @scope (.a) { |
| @supports (width:0px) { |
| :scope { |
| z-index: 1; |
| } |
| |
| .b { |
| background-color: green; |
| } |
| } |
| } |
| </style> |
| <main> |
| <div class=a> |
| <div class=b> |
| </div> |
| </div> |
| <div class=b></div> |
| </main> |
| <script> |
| test(() => { |
| let a = document.querySelector('main > .a'); |
| let b = document.querySelector('main > .a > .b'); |
| assert_equals(getComputedStyle(a).zIndex, '1'); |
| assert_equals(getComputedStyle(b).backgroundColor, 'rgb(0, 128, 0)'); |
| |
| let out_of_scope_b = document.querySelector('main > .b'); |
| assert_equals(getComputedStyle(out_of_scope_b).backgroundColor, 'rgba(0, 0, 0, 0)'); |
| }, 'Style rules within @supports are scoped'); |
| </script> |