anchor.diff:    $.get('/sg/move?game_id=<%=sesh[:game_id]%>&box='+id+'&phase='+window.phase).success(r=> {
       $('.box.'+id).html(r.val);
       setTimeout(()=> {
  -      $('.box').html('')
  +      $('.box.'+id).html('')
       },1000);
     })
   }
  
positive.code: .box {
    height: 200px;
    width: 200px;
    background-color: grey;
    /*margin:20px;*/
    border:1px solid black;
    display: inline-block;
  
negative.code:   cursor: not-allowed;
  }
  .box.disabled {
    background-color: darkgrey;
    color:white;
  }
  .sample_or_choose {
    background-color: lightblue;
  