| <!DOCTYPE html> |
| <title>position:sticky top constraint should behave correctly for <th> elements</title> |
| <link rel="match" href="position-sticky-table-th-top-ref.html" /> |
| <link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos" /> |
| <meta name="assert" content="This test checks that the position:sticky top constraint behaves correctly for <th> elements" /> |
| |
| <style> |
| table { |
| border-collapse:collapse; |
| } |
| |
| td, th { |
| padding: 0; |
| } |
| |
| td > div, th > div { |
| height: 50px; |
| width: 50px; |
| } |
| |
| .group { |
| display: inline-block; |
| position: relative; |
| width: 150px; |
| height: 200px; |
| } |
| |
| .scroller { |
| position: relative; |
| width: 100px; |
| height: 150px; |
| overflow-x: hidden; |
| overflow-y: auto; |
| } |
| |
| .prepadding { |
| height: 100px; |
| } |
| |
| .postpadding { |
| height: 250px; |
| } |
| |
| .indicator { |
| position: absolute; |
| background-color: red; |
| left: 0; |
| height: 50px; |
| width: 50px; |
| } |
| |
| .sticky { |
| position: sticky; |
| top: 25px; |
| background-color: green; |
| } |
| </style> |
| |
| <script> |
| window.addEventListener('load', function() { |
| document.getElementById('scroller1').scrollTop = 50; |
| document.getElementById('scroller2').scrollTop = 125; |
| document.getElementById('scroller3').scrollTop = 250; |
| }); |
| </script> |
| |
| <div class="group"> |
| <div id="scroller1" class="scroller"> |
| <div class="indicator" style="top: 100px;"></div> |
| <div class="prepadding"></div> |
| <table> |
| <thead> |
| <tr> |
| <th class="sticky"><div></div></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr><td><div></div></td></tr> |
| <tr><td><div></div></td></tr> |
| <tr><td><div></div></td></tr> |
| </tbody> |
| </table> |
| <div class="postpadding"></div> |
| </div> |
| </div> |
| |
| <div class="group"> |
| <div id="scroller2" class="scroller"> |
| <div class="indicator" style="top: 150px;"></div> |
| <div class="prepadding"></div> |
| <table> |
| <thead> |
| <tr> |
| <th class="sticky"><div></div></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr><td><div></div></td></tr> |
| <tr><td><div></div></td></tr> |
| <tr><td><div></div></td></tr> |
| </tbody> |
| </table> |
| <div class="postpadding"></div> |
| </div> |
| </div> |
| |
| <div class="group"> |
| <div id="scroller3" class="scroller"> |
| <div class="indicator" style="top: 250px;"></div> |
| <div class="prepadding"></div> |
| <table> |
| <thead> |
| <tr> |
| <th class="sticky"><div></div></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr><td><div></div></td></tr> |
| <tr><td><div></div></td></tr> |
| <tr><td><div></div></td></tr> |
| </tbody> |
| </table> |
| <div class="postpadding"></div> |
| </div> |
| </div> |
| |
| <div>You should see three green boxes above. No red should be visible.</div> |
