div.showcase {
  position: relative;
  float: left;
  margin-right: 20px;
}

div.showcase ul.layers {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  clear: both;
  position: relative;
  top: 0;
  left: 0;
  width: 710px;
  height: 300px;
}

div.showcase ul.layers li {
  float: left;
  position: absolute;
  width: 710px;
  height: 300px;
  padding: 0px;
  margin-right:5px;