BODY { margin: 0; overflow: hidden; } DIV#envelope { position: relative; width: 100%; height: 100%; } DIV#upperbar { position: absolute; top: 0; left: 0; right: 0; bottom: auto; height: 80px; width: 100%; background-color: white; overflow: none; margin: 0 0 0 0; } DIV#sidebar { position: absolute; top: 80px; bottom: 0px; left: 0; right: auto; width: 130px; height: 100%; background-color: white; overflow: none; margin: 0 0 0 0; border-top: 3px black solid; } DIV#main { position: absolute; top: 80px; bottom: 0px; left: 130px; right: 0; height: 80%; background-color: white; margin: 0px 0px 0px 0px; padding-right: 70px; border-right: 0px; overflow: auto; border-top: 3px black solid; } UL.menu1 { list-style: none; padding-left: 2px; margin-left: 0px; margin-top: 0px; } UL.menu1 LI { text-align: left; width: 120px; background-color: red; line-height: 1.20em; font-weight: bold; border-top: 1px solid #FFF; border-bottom: 1px solid #FFF; margin-top: 0px; margin-bottom: 0px; } UL.menu1 LI A { display: block; text-decoration: none; background-color: white; margin-top: 0px; margin-bottom: 0px; } UL.menu1 LI A:hover { background-color: lime; }