body {
font: 100% Verdana, Arial, Helvetica, sans-serif;
margin: 0;
font-size:12px;
line-height: 16px;
width: 800;
background: #ffffff;
background-image: #ffffff;text-align: left;
}

A.rvr:link {
COLOR: red; TEXT-DECORATION: none }
A.rvr:visited {
COLOR: white; TEXT-DECORATION: none }
A.rvr:active {
COLOR: green; TEXT-DECORATION: none }
A.rvr:hover {
COLOR: white; TEXT-DECORATION: underline; BACKGROUND: #990000 }

#mainrvr{
position: absolute;
left: 50%;

width: 800px;

margin-left: -400px; /* De helft van de breedte */
border: 1px solid #000000;
background: #cccccc;
}

#mainreserve{
position: absolute;
top: 50%;
left: 50%;
height: 600px;
width: 800px;
margin-top: -300px; /* De helft van de hoogte */
margin-left: -400px; /* De helft van de breedte */
border: 1px solid #000000;
background: #cccccc;
}