.thumb-show {
  box-sizing: border-box;
  /*border: 2px solid #f50057;*/
  width: 300px;
  overflow: hidden;
  margin: 50px  auto;
  position: relative;
  cursor: -webkit-zoom-in;
  cursor: zoom-in;
}
.thumb-show img {
  width: 100%;
  float: left;
}
.thumb-show img.zoom {
  position: absolute;
  -moz-transition: width 0.2s ease-out, opacity 0.2s ease-out 0.2s;
  -o-transition: width 0.2s ease-out, opacity 0.2s ease-out 0.2s;
  -webkit-transition: width 0.2s ease-out, opacity 0.2s ease-out;
  -webkit-transition-delay: 0s, 0.2s;
  -webkit-transition: width 0.2s ease-out, opacity 0.2s ease-out 0.2s;
  transition: width 0.2s ease-out, opacity 0.2s ease-out 0.2s;
}