<html>
<head>
<title>Testpagina</title>
<style>
* {
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="container" style="width: 100%; height: 100%;">
<div class="rij-boven" style="width: 100%;">
<div class="kolom-1" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 100%;">Test</div>
</div>
<div class="rij-midden" style="width: 100%;">
<div class="kolom-1" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 25%;">Test</div>
<div class="kolom-2" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 25%;">Test</div>
<div class="kolom-3" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 25%;">Test</div>
<div class="kolom-4" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 25%;">Test</div>
</div>
<div class="rij-onder" style="width: 100%;">
<div class="kolom-1" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 50%;">Test</div>
<div class="kolom-2" style="float: left; box-shadow: 0px 0px 0px 1px #000 inset; height: 100px; width: 50%;">Test</div>
</div>
</div>
</body>
</html>