1<!DOCTYPE html> 2<html> 3<head> 4 <style> 5 body { 6 height: 2000px; 7 margin: 0px; 8 padding: 0px; 9 } 10 .main { 11 position: fixed; 12 } 13 .fixed { 14 position: fixed; 15 width: 100%; 16 height: 100px; 17 left: 0px; 18 bottom: -100px; 19 background-color: red; 20 } 21 </style> 22</head> 23 24<body> 25 <div class="main"> 26 This test is applicable on platforms that do accelerated compositing, can prepaint out-of-view contents and can scroll the contents into the viewport without repainting them.<p> 27 The following settings need to be enabled:<p> 28 - acceleratedCompositingForFixedPositionEnabled<br> 29 - fixedPositionCreatesStackingContext<p> 30 To test, scroll the page up and down. The test passes if there is no temporary or permanent red in the page. 31 </div> 32 33 <!-- An out-of-view fixed element that should be never visible --> 34 <div class="fixed"></div> 35</body> 36</html> 37 38