<div id="main"> <div id="nav">nav</div> <div id="content">content</div> </div>
html, body { height: 100%; margin: 0px; padding: 0px; } #main { background-color: #999; height: 100%; }
#nav { background-color: #85d989; height: 50px; }
#nav { background-color: #85d989; width: 100%; height: 50px; } #content { background-color: #cc85d9; width: 100%; position: absolute; top: 50px; bottom: 0px; left: 0px; }