host-specificity-003.html (857B)
1 <!doctype html> 2 <meta charset="utf-8"> 3 <title>CSS Test: the :host() selector affects specificity</title> 4 <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> 5 <link rel="author" title="Mozilla" href="https://mozilla.org"> 6 <link rel="help" href="https://drafts.csswg.org/css-scoping/#host-selector"> 7 <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/1915"> 8 <link rel="help" href="https://bugzil.la/1454165"> 9 <link rel="match" href="reference/green-box.html"> 10 <p>Test passes if you see a single 100px by 100px green box below.</p> 11 <div id="host"></div> 12 <script> 13 host.attachShadow({ mode: 'open' }).innerHTML = ` 14 <style> 15 :host(*) div { 16 width: 100px; 17 height: 100px; 18 background: green; 19 } 20 div { 21 background: red; 22 } 23 </style> 24 <div></div> 25 `; 26 </script>