javascript-flex-images/flex-images.css

A lightweight vanilla JavaScript plugin for creating fluid galleries as seen on Flickr and Google Images.

.flex-images { overflow: hidden; }
.flex-images .item { float: left; margin: 4px; border: 1px solid #eee; box-sizing: content-box; overflow: hidden; position: relative;  }
.flex-images .item img { display: block; width: auto; height: 100%; }