<html> <head> <meta name="viewport" content="initial-scale=1"> <title>Basic Rasterization Test: Blue Box over Black Background</title> <style type="text/css"> body { margin: 0px; padding: 0px; background-color: white; } #container { position: relative; margin: 10px; width: 200px; height: 200px; background-color: black; } #blue_box { position: relative; top: 50px; left: 50px; width: 100px; height: 100px; background-color: blue; } </style> <script> var g_swapsBeforeAck = 15; function main() { waitForFinish(); } function waitForFinish() { if (g_swapsBeforeAck == 0) { domAutomationController.setAutomationId(1); domAutomationController.send("SUCCESS"); } else { g_swapsBeforeAck--; document.getElementById('blue_box').style.zIndex = g_swapsBeforeAck + 1; window.webkitRequestAnimationFrame(waitForFinish); } } </script> </head> <body onload="main()"> <div id="container"> <div id="blue_box"></div> </div> </body> </html>