.caja_Gris1122Img
{
   border-bottom :2px; 
   border-right :2px;
   border-top :1px ;
   border-left:1px; 
   border-style:solid ;
   border-bottom-color:#737373; 
   border-left-color:#737373 ;
   border-right-color:#737373;
   border-top-color :#737373; 
}