Bootstrap/less/thumbnails.less

//
// Thumbnails
// --------------------------------------------------


// The actual thumbnail (can be `a` or `div`)
.thumbnail {
  display: block;
  padding: 4px;
  line-height: @line-height-base;
  border: 1px solid #ddd;
  border-radius: @border-radius-base;
  .box-shadow(0 1px 3px rgba(0,0,0,.055));
  .transition(all .2s ease-in-out);
}
// Add a hover state for linked versions only
a.thumbnail:hover {
  border-color: @link-color;
  .box-shadow(0 1px 4px rgba(0,105,214,.25));
}

// Images and captions
.thumbnail > img {
  display: block;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}
.thumbnail .caption {
  padding: 9px;
  color: @gray;
}