#header {
    /* blauer Balken, links dunkel, rechts hell */
    background: #318fbf url("../images/layout/header.png") 35% top;
}

#background {
    /* Weißer Hintergrund und Übergang mit schrägen Linien */
    background: transparent url("../images/layout/background-transition-medium.png") center top no-repeat;
}

#header h1,
#container {
    width: 700px;
}

#navigation {
    width: 203px;  /* 203 + 22 = 225px */
}

#content,
#content .column-75,
#content .column-50 {
    width: 475px;
    padding: 0 0 20px 0;
}

#content .column-25 {
    display: none;
}

#content .column-75 img,
#content .column-50 img {
    max-width: 475px;
}

#content .column-75 a.gallery img {
    margin: 0 25px 15px 0;
}

#content .column-75 iframe,
#content .column-50 iframe {
    width: 475px;
    height: 300px;
}