.thumb {
  position: relative;
  width: 264px;
  height: 198px;
  overflow: hidden;
}
.thumb img {
  position: absolute;
  left: 50%;
  top: 50%;
  height: 100%;
  width: auto;
  -webkit-transform: translate(-50%,-50%);
      -ms-transform: translate(-50%,-50%);
          transform: translate(-50%,-50%);
}