html, body {background-color:#348;height:100%;}

.main {width:80%;margin:0 auto;height:100%;
} /* Seitenbreite */

.oben {height:180px;background-image: url(../image/bg.png);}
#header {margin:1em}

.col1 {min-height: 100%; /* Mindesthöhe in modernen Browsern */
height: auto !important; /* !important-Regel für moderne Browser */
height: 100%; /* Mindesthöhe in IE (<7) */
background-color:#35a;}
#content {margin:1em;}

.col2 {min-height: 100%; /* Mindesthöhe in modernen Browsern */
height: auto !important; /* !important-Regel für moderne Browser */
height: 100%; /* Mindesthöhe in IE (<7) */
background-color:#46b;}
#sidebar1 {margin:2em 0 0 1em}

.col3 {min-height: 100%; /* Mindesthöhe in modernen Browsern */
height: auto !important; /* !important-Regel für moderne Browser */
height: 100%; /* Mindesthöhe in IE (<7) */
background-color:#46a;}
#sidebar2 {margin-top:2em}

.unten {height:120px;background-color:#024;}
.unten1 {height:120px;background-color:#036;}
#footer, #footer2 {margin:1em;}