body 
{ 
margin-left: 10%; margin-right: 10%; 
background: #ffffff;
color: #ffffff;
}

div.vasen 
{
position:absolute;
top:145px;
left:0px;
height:460px;
width:200px;
background: #000000;
margin: 0px;
padding: 0px;
border: solid 1px #000000;
}

div.yla 
{
position:absolute;
top:145px;
left:200px;
height:460px;
width:800px;
background: rgb(220,220,255);
margin: 0px;
padding: 0px;
border: solid 1px #000000;
}