.placeholder{
    display:inline-block;
    position: absolute;;
    width:100%;
    height:100%; 
    cursor: pointer;
    background-repeat: no-repeat;        
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    /*margin-top:100px;*/
  }
  
  .gridContainer{
    width:100%;
    height:100%;
  }
  
  .gridTile
  {
    position:absolute;
    top:0px;
    left:0px;
    width:100%;
    height:100%;
    background-size:cover;
    background-repeat:no-repeat;
    background-origin:center;
  }

  .gridImageContainer{
    display: none;
  }

  .gridImageContainer img{
    width: 100%;
  }