<!DOCTYPE html> <title>Test "end-edges" of scrollable overflows in various writing modes</title> <link rel="help" href="https://drafts.csswg.org/css-overflow-3/#scrollable"> <link rel="author" href="mailto:kojii@chromium.org"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <style> scroller { display: inline-block; overflow: auto; width: 100px; height: 100px; font-size: 50px; line-height: 1; } .vlr { writing-mode: vertical-lr; } .vrl { writing-mode: vertical-rl; } .htb > .block-start { padding-top: 200px; } .htb > .block-end { padding-bottom: 200px; } .vlr > .block-start { padding-left: 200px; } .vlr > .block-end { padding-right: 200px; } .vrl > .block-start { padding-right: 200px; } .vrl > .block-end { padding-left: 200px; } </style> <body> <div id="log"></div> <div class="htb"> <scroller class="block-start">A</scroller> <scroller class="block-end">A</scroller> </div> <div class="vlr"> <scroller class="block-start">A</scroller> <scroller class="block-end">A</scroller> </div> <div class="vrl"> <scroller class="block-start">A</scroller> <scroller class="block-end">A</scroller> </div> <script> for (let element of document.getElementsByTagName('scroller')) { let writing_mode = getComputedStyle(element).writingMode; test(() => { assert_equals(element.scrollWidth, element.offsetWidth, "scrollWidth"); assert_equals(element.scrollHeight, element.offsetHeight, "scrollHeight"); }, writing_mode + ' ' + element.className); } </script> </body>