Header wird nicht angezeigt!

#header {
background: url("http://img.webme.com/pic/t/twoddi/header.png");
width: 900px;
float: left;
padding: 10px;
border: 0px solid #ccc;
height: 100px;
margin: 10px 0px 0px 0px;
background: #E7DBD5;
-webkit-border-top-left-radius: 8px;
-webkit-border-top-right-radius: 8px;
-moz-border-radius-topleft: 8px;
-moz-border-radius-topright: 8px;
border-top-left-radius: 8px;
border-top-right-radius: 8px;
}