* {
  margin:0px;
  padding:0px;
}

body {

  text-align:center;
  background-color:#CCCCCC;
}

#contenedor {

  width:800px;
  text-align:left;
  color:#333333;
  cursor: default;
  background-color:#F3F3F3;
  border:1px solid #333333;
  margin:5px;
  position:absolute;
  top:0;
  left:50%;
  margin-left:-400px;
}

#encabezado {

  clear:both;
  width:800px;
}

#principal {
  
  padding:5px;
  width:790px;
}

#pie {

  position:relative;
  padding:0px;
  color:#666666;
  clear:both;
  width:800px;
  bottom:0;
}