@page {
    size: A4;
    margin: 2.5cm 1.5cm 2cm 2.5cm;
}
#head,
#sidel,
#sider,
#nav,
#footer {
    display:none;
}

#cont {
    width:17cm;
    margin:0 auto;
}
#cont h1,
#cont h2 {
    page-break-after:avoid;
}

#cont p {
    orphans:6;
}

.table_referenz {
    border: 1px solid #cdd0d2; 
}
.table_referenz th {
    border-bottom: 1px solid #cdd0d2;
}