html, body
{
    float: left;
    display: block;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

body
{
    display: block;
    background-image: url(img/img_bg_werkstatt.webp);
    background-repeat: no-repeat;
    background-size: cover;
}

#content_box
{
    display: block;
    position: relative;
    width: 70vmin;
    height: 29vmin;
    margin: 35vmin auto;
    background-image: url(img/img_bg_banner.webp);
    background-repeat: no-repeat;
    background-size: cover;
    border: thin solid #fff;
    box-shadow: 0vmin 5vmin 14vmin rgba(0,0,0,0.8);
}