body{margin:0;text-align:center;background-color:#FFFFFF;}

.placeholder{
  display:inline-block;
  width:800px;
  height:600px;
  box-sizing:border-box;
  margin-top:40px;
  position:relative;
}

.column, .blind, .blindImg{
  position:absolute;
  top:0;
  height:100%;
  box-sizing:border-box;
}

.blind{
  overflow:hidden;
}

.blindImg{
  width:100%;
  background-size:cover;
}