div.box{
 height:200px;
 width:200px;
 text-align:center;
 font-size:14px;
 color:#090;
 background-color:#dddddd;
 margin-right:10px;
}
div.red{
 background-color:#ffcccc;
}
div.green{
 background-color:#ccffcc;
}
div.blue{
 background-color:#ccccff;
}