#enlargement {
text-align: center
}
#enlargement img {
border: none;
}

#enlargement img.ref_pic {
  padding: 5px;
  border-left: 1px solid #cccccc;
  border-top: 1px solid #cccccc;
  border-right: 1px solid #777777;
  border-bottom: 1px solid #777777;
  }