<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head><title>Adding z-index</title> <!-- https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Understanding_z_index/Adding_z-index?redirectlocale=en-US&redirectslug=CSS%2FUnderstanding_z-index%2FAdding_z-index --> <script type="text/javascript" src="../../test.js"></script> <style type="text/css"> div { opacity: 0.7; font: 12px Arial; } span.bold { font-weight: bold; } #normdiv { z-index: 8; height: 70px; border: 1px solid #999966; background-color: #ffffcc; margin: 0px 50px 0px 50px; text-align: center; } #reldiv1 { z-index: 3; height: 100px; position: relative; top: 30px; border: 1px solid #669966; background-color: #ccffcc; margin: 0px 50px 0px 50px; text-align: center; } #reldiv2 { z-index: 2; height: 100px; position: relative; top: 15px; left: 20px; border: 1px solid #669966; background-color: #ccffcc; margin: 0px 50px 0px 50px; text-align: center; } #absdiv1 { z-index: 5; position: absolute; width: 150px; height: 350px; top: 10px; left: 10px; border: 1px solid #990000; background-color: #ffdddd; text-align: center; } #absdiv2 { z-index: 1; position: absolute; width: 150px; height: 350px; top: 10px; right: 10px; border: 1px solid #990000; background-color: #ffdddd; text-align: center; } </style></head> <body> <br /><br /> <div id="absdiv1"> <br /><span class="bold">DIV #1</span> <br />position: absolute; <br />z-index: 5; </div> <div id="reldiv1"> <br /><span class="bold">DIV #2</span> <br />position: relative; <br />z-index: 3; </div> <div id="reldiv2"> <br /><span class="bold">DIV #3</span> <br />position: relative; <br />z-index: 2; </div> <div id="absdiv2"> <br /><span class="bold">DIV #4</span> <br />position: absolute; <br />z-index: 1; </div> <div id="normdiv"> <br /><span class="bold">DIV #5</span> <br />no positioning <br />z-index: 8; </div> </body></html>