<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html class="reftest-print"> <style type="text/css"> html, body { margin: 0; padding: 0; height: 100%; } .float { float: right; width: 15px; background: aqua; height: 5in; } .L { float: left; } .container { width: 100%; } .clear { border-bottom: solid orange; background: red; } </style> <div class="container"> <div class="float L"></div> <div class="float R"></div> <br clear="all"> </div> <div class="clear"> </div>