div.koppelboxtitel {
    background-color: #00A6EB;
}

div#koppelboxkolom1,
div#koppelboxkolom2,
div#koppelboxkolom3 {
    height: auto;
    /*margin-right: 20px;*/
}

div.koppelboxkolom2 {
    width: 295px;
    margin: 0 20px 0 0;
}

div.koppelbox,
div.koppelbox ul {
    box-sizing:content-box;
}