| <!DOCTYPE html> |
| <title>scroll anchoring accounts for scroll-padding</title> |
| <link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> |
| <link rel="author" href="https://mozilla.org" title="Mozilla"> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/#anchor-node-selection"> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#optimal-viewing-region"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| #scroller { |
| overflow: auto; |
| height: 500px; |
| scroll-padding-top: 200px; |
| } |
| #changer { |
| height: 100px; |
| } |
| #content { |
| height: 1000px; |
| } |
| </style> |
| <div id="scroller"> |
| <div id="changer"></div> |
| <div id="content"></div> |
| </div> |
| <script> |
| test(() => { |
| scroller.scrollTop = 50; |
| changer.style.height = "200px"; |
| assert_equals(scroller.scrollTop, 150, "Shouldn't anchor to #changer, since it's covered by scroll-padding"); |
| }); |
| </script> |
