| <!DOCTYPE html> |
| <title>CSS Container Queries Test: Container for elements with pseudo elements</title> |
| <link rel="help" href="https://drafts.csswg.org/css-contain-3/#query-container"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="support/cq-testcommon.js"></script> |
| <style> |
| :root { |
| color: black; |
| } |
| |
| .container { |
| container-type: size; |
| width: 200px; |
| height: 40px; |
| } |
| |
| @container (min-width: 300px) { |
| #container1 div::before { content: "before"; } |
| #container1 div::after { content: "after"; } |
| #container2 li::marker { color: green; } |
| } |
| </style> |
| <main id=container1 class=container> |
| <div>test</div> |
| </main> |
| <main id=container2 class=container> |
| <ol> |
| <li>One</li> |
| </ol> |
| </main> |
| <script> |
| setup(() => assert_implements_container_queries()); |
| |
| test(function() { |
| let div = document.querySelector('#container1 > div'); |
| assert_equals(getComputedStyle(div, '::before').content, 'none'); |
| assert_equals(getComputedStyle(div, '::after').content, 'none'); |
| |
| container1.style.width = '300px'; |
| assert_equals(getComputedStyle(div, '::before').content, '"before"'); |
| assert_equals(getComputedStyle(div, '::after').content, '"after"'); |
| |
| container1.style = ''; |
| assert_equals(getComputedStyle(div, '::before').content, 'none'); |
| assert_equals(getComputedStyle(div, '::after').content, 'none'); |
| }, 'Pseudo-elements ::before and ::after respond to container size changes'); |
| |
| test(function() { |
| let li = document.querySelector('#container2 li'); |
| assert_equals(getComputedStyle(li, '::marker').color, 'rgb(0, 0, 0)'); |
| |
| container2.style.width = '300px'; |
| assert_equals(getComputedStyle(li, '::marker').color, 'rgb(0, 128, 0)'); |
| |
| container2.style = ''; |
| assert_equals(getComputedStyle(li, '::marker').color, 'rgb(0, 0, 0)'); |
| }, 'Pseudo-element ::marker responds to container size changes'); |
| </script> |