body {
  background-color:#CAEBC2;
  text-align: center; }

#menu {
  float:left; 
  margin-bottom:5px;
  height: 360px;
  width:200px;
  margin-top:10px;
}
#principal {
   float:left;
   border:1px;
   background-color:#CAEBC2;
   width:600px;
   height:500px;
   margin-top:10px;
}
#pie {
  float:right;
  border:1px;
  width:600px;
  background-color:#CAEBC2;
  margin-top:2px;
}

#cuerpo{
	 margin: 0px auto;
     overflow: hidden;
     width:800px;
}