<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!DOCTYPE html> <meta charset="utf-8"> <title>Test that overlay scrollbars are not covered by overlapping non-positioned siblings</title> <style> #outer { width: 200px; height: 200px; overflow: auto; background: cyan; } #content { height: 400px; } /* This test has different behavior depending on the type of scrollbar used. * We want the scrollbar to be visible. But for non-overlay scrollbars, the * cover would cover them so we disable the cover. */ @media all and (-moz-overlay-scrollbars) { #cover { margin-top: -200px; width: 200px; height: 200px; background: cyan; } } </style> <div id="outer"><div id="content"></div></div> <div id="cover"></div>