.placeHolderContainer{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    z-index:99;
    /*background:#fff;*/
    
    opacity:0;
    visibility:hidden;
    /*display:none;*/
  }
  .placeHolderContainer.show{
    /*display:block;*/
    opacity:1;
    visibility:visible;

  }
  .placeholder{
    position:absolute;
    width:var(--block1);
    height:var(--block1);
    border-right:1px solid red;
    border-bottom:1px solid red;
    /*background:rgba(255,255,255,0.2);*/
    /*wf-left;*/
    /*display:none !important;*/
  }
  
  .placeholder:hover{
    background:rgba(255,255,255,0.2);
    
  }