/* CSS Document */
#principal {
   margin:0 auto;
} 

.contenedorfoto {
   float:left;
   margin: 10px;
   padding:5px;
}
.contenedorfoto {
   float:left;
   width:150px;
   height:150px;
   margin: 10px;
   padding:5px;
   background-color:#D1CEB8;
   border-right: #a5a7aa solid 1px;
   border-bottom: #a5a7aa solid 1px;
   text-align:center;
}