body {
    width: 100%;
}

div .webseite {
    width: 100%;
}

div .header {
    width: 100%;
    clear:both;
}

div .header_logo_links {
    width: 25%;
    float: left;
}

div .header_text {
    width: 49%;
    float: left;
    text-align:center;
}

div .header_logo_rechts {
    width: 25%;
    float: right;
}

div .footer {
    width: 100%;
    clear:both;
}

div .footer_logo_links {
    width: 25%;
    float: left;
}

div .footer_text {
    width: 49%;
    float: left;
    text-align:center;
}

div .footer_logo_rechts {
    width: 25%;
    float: right;
}

div .body {
    width: 100%;
    clear:both;
}

div .body_oben {
    width: 100%;
}

div .body_mitte {
    width: 100%;
    clear:both;
}

div .body_unten {
    width: 100%;
}