| <!DOCTYPE html> |
| <title>@container: scroll-state(snapped: both) matching</title> |
| <link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script> |
| <script src="/css/css-transitions/support/helper.js"></script> |
| <style> |
| :root { |
| scroll-snap-type: both mandatory; |
| } |
| body { |
| margin: 0; |
| } |
| #filler { |
| width: 10000px; |
| height: 10000px; |
| } |
| #snapped { |
| margin-top: 200px; |
| margin-left: 200px; |
| width: 100px; |
| height: 100px; |
| container-type: scroll-state; |
| scroll-snap-align: start; |
| background: teal; |
| } |
| |
| @container scroll-state(snapped: both) { |
| #target { --snapped: yes } |
| } |
| </style> |
| <div id="snapped"> |
| <span id="target">My container is snapped</span> |
| </div> |
| <div id="filler"></div> |
| <script> |
| setup(() => assert_implements_scroll_state_container_queries()); |
| |
| promise_test(async t => { |
| await waitForAnimationFrames(2); |
| assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes"); |
| assert_equals(document.documentElement.scrollTop, 200); |
| assert_equals(document.documentElement.scrollLeft, 200); |
| }, "Check that scroll-state(snapped: block) matches"); |
| </script> |
