.marco1 { 
   padding:4px; 
   background-color: #f5f5f5; 

   border: 1px solid #999999; 
} 
.marco1 IMG{ 
   border: 1px solid #000000; 
} 

.marco2 { 
   padding:8px; 
   background-color: #f5f5f5; 

   border-bottom: 1px solid #999999; 
   border-right: 1px solid #999999; 
}