Hol a foot?
<html> <head> <style type="text/css"> #head,#foot{ width:400px; height:30px; background:red; } #bal,#jobb{ width:200px; height:400px; background:black; } #bal{float:left;} #jobb{float:left;} </style> </head> <body> <div id="head"></div> <div id="bal"></div> <div id="jobb"></div> <div id="foot"></div> </body> </html>