.box {
  position: relative;
  border: 1px solid #666;
  display: inline-block;
  margin-bottom: 20px;
}
.box.left {
  float: left;
  margin: 0 20px 20px 0;
}
.box.right {
  float: right;
  margin: 0 0 20px 20px;
}
.box img {
  margin: 10px;
}
.with-caption img {
  margin-bottom: 60px;
}
.box .caption {
  background: #000;
  color: #fff;
  position: absolute;
  bottom: 0;
  left: 0;
  height: 50px;
  width: 100%;
  opacity: 0.6;
}
.box .caption span {
  margin: 5px 8px;
  display: block;
}