div.scrollable {
  position: relative;
  overflow: hidden;
  float: left;
  width: 450px;
  height: 200px;
}

div.scrollable div.items {
  width: 20000em;
  position: absolute;
}

div.scrollable div.items div {
  float: left;
}

div.items div.active {
  border: 1px inset #ccc;
  background-color: #fff;
}