Set z-index to 100
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/2000/REC-xhtml1-20000126/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title></title> <style type="text/css"> body { margin: 0px; padding: 0px; color: #000; background-color: #ccc; } #one { position: absolute; top: 10px; left: 10px; z-index: 4; padding: 10px; background-color: #fff; border: 1px solid #000; width: 20%; } #two { position: absolute; top: 40px; left: 40px; z-index: 300; padding: 10px; background-color: #ccc; border: 1px solid #000; width: 20%; } #three { position: absolute; top: 70px; left: 70px; z-index: 2; padding: 10px; background-color: #fff; border: 1px solid #000; width: 20%; } #four { position: absolute; top: 100px; left: 100px; z-index: 1; padding: 10px; background-color: #ccc; border: 1px solid #000; width: 20%; } </style> </head> <body> <div id="one">1</div> <div id="two">2</div> <div id="three">3</div> <div id="four">4</div> </body> </html>