<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="es-es">
<head>
<title>Plantilla</title>
<meta http-equiv="Content-Type"
content="text/html; charset=iso-8859-1" />
<style type="text/css">
#contenedor { border-style: solid;
border-width: 2px;
width: 700px;
margin: 0px auto;
}
.izq { border: 1px solid rgb(255, 102, 0);
margin: 10px 10px 0px;
background-color: rgb(51, 153, 153);
height: 100px;
float: left;
width: 300px;
}
.der { border: 1px solid rgb(51, 255, 51);
margin: 10px 10px 0px;
background-color: rgb(51, 102, 102);
height: 100px;
float: right;
width: 300px;
}
.corte { clear: both;
}
</style>
</head>
<body>
<div id="contenedor">
<div class="izq">Cuadro 1</div>
<div class="der">Cuadro 2</div>
<div class="izq">Cuadro 3</div>
<div class="der">Cuadro 4</div>
<div class="izq">Cuadro 5</div>
<div class="der">Cuadro 6</div>
<div class="corte"></div>
<br />
</div>
</body>
</html>