html, body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}
body {
    background-image: url(../pictures/back.png);
    background-repeat: repeat-y;
    background-position: center top;
    background-attachment: fixed;
}
div.text {
    display: none;
}
#page {
    position: absolute;
    width: 900px;
    height: 425px;
    left: 50%;
    top: 50%;
    margin-top: -212px;
    margin-left: -450px;
}
#page a {
    display: block;
    width: 450px;
    height: 0;
    padding-top: 425px;
    overflow: hidden;
    background-image: url(../pictures/content-de.png);
    float: left;
}
body.fr #page a {
    background-image: url(../pictures/content-fr.png);
}
#autoschweiz {
    background-position: 0 0;
}
#autoschweiz:hover {
    background-position: 0 -425px;
}
#cleverunterwegs {
    background-position: -450px 0;
}
#cleverunterwegs:hover {
    background-position: -450px -425px;
}