.innen {
    margin: auto;
    margin-top: 60px;
    width: 675px;
    height: 530px;
    background-color: #C5C5C3;
    text-align: left;
}
.menu_tapeten_aktiv {
    width: 80px;
    height: 60px;
    border: none;
    cursor: pointer;
    float: left;
    background-image: url(../images/menu/tapeten_aktiv.png);
    background: expression("none");
    filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, src='../images/menu/tapeten_aktiv.png');
}
.bild0 {
   width: 400px;
   height: 350px;
   cursor: pointer;
}
.bild1 {
   width: 150px;
   height: 350px;
   margin-left: 100px;
}