.thumbnail,
.img-thumbnail {
  padding: 4px;
  line-height: 20px;
  border: 1px solid #ddd;
  border-radius: 4px;
  -webkit-transition: all 0.2s ease-in-out;
  -moz-transition: all 0.2s ease-in-out;
  -o-transition: all 0.2s ease-in-out;
  transition: all 0.2s ease-in-out;
}
.thumbnail {
  display: block;
}
.img-thumbnail {
  display: inline-block;
}
a.thumbnail:hover {
  border-color: #428bca;
}
.thumbnail > img {
  display: block;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}
.thumbnail .caption {
  padding: 9px;
  color: #555555;
}