Fluid Layout <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title></title><style type="text/css" media="Screen">* .float-divider { clear: both; display: block; background: pink; height: 10px; font-size: 10px; line-height: 10px;}* .subSection1 { background-color: red; margin: 0; padding: 5px;}* .subSection2 { background-color: gold; margin: 5px; padding: 5px;}* .subSection3 { background-color: yellow; margin: 5px; padding: 5px;}#main { max-width: 700px;}#leftBar { float: left; width: 20%; min-width: 75px;}#content { float: left; width: 60%; min-width: 150px;}#rightBar { float: left; width: 20%; min-width: 115px;}#leftBar * .subSection2 { min-height: 43px;}#content * .subSection3 { display: block;}#head { float: left; width: 35%; min-width: 75px;}#detail { float: left; width: 65%; min-width: 75px;}</style></head><body><div id="main"> <div class="subSection1"> <h2>main - 100%</h2> <div id="leftBar"> <div class="subSection2"> <h3>leftBar -20%</h3> </div> </div> <div id="content"> <div class="subSection2"> <h3>content - 60%</h3> <span id="head"> <span class="subSection3"> <em>head - 35%</em> </span> </span> <span id="detail"> <span class="subSection3"> <em>detail - 65%</em> </span> </span> <span class="float-divider">divider</span> </div> </div> <div id="rightBar"> <div class="subSection2"> <h3>rightBar -20%</h3> </div> </div> <div class="float-divider">divider</div> </div></div> </body></html>