.demo {
  position: relative;
  margin-bottom: 20px;
}
.gallery a {
  position: relative;
  display: inline-block;
  vertical-align: top;
  border: 1px solid #d4d4d4;
  padding: 5px;
  margin: 0 5px 10px 0;
  outline: 0;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.2);
}
.gallery a:hover {
  border-color: #900;
}
.gallery a img {
  display: block;
}
.gallery_2 {
    padding: 10px !important;
}
.gallery_2 img {
    border: 4px solid #000;
    border-top-width: 8px;
    border-bottom-width: 8px;
}
.gallery_3 {
    position: relative; display: inline-block;
    vertical-align: top;
    border: 1px solid #d4d4d4;
    padding: 5px;
    margin: 0 5px 10px 0;
    outline: 0;
    background: #fff;
    border-radius: 2px;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}
.gallery_3:hover {
    border-color: #900;
}