.caja{
  text-align: center;
}

.imagen1{
  width: 480px;
  height:360px;
  border: 5px solid brown;
  /* margin: 100px; */
  opacity: 0.6;
  border-radius: 14px 8px 6px 12px;
  background-color: #b61818;
  /* display: inline; */
}