anchor.diff:    height: 100%;
     width: 80%;
     opacity: 0.6;
  -  font-size:20px;
  +  font-size:50px;
  +  color: black;
     font-weight: bold;
     background-color: lightgrey;
     z-index: 999;
  
positive.code: 
  window.phase = 'sample';
  function sampleOrChooseState(state) {
    if (state == 'sample' && ((data.user_ids.length > 1) && data.chosen_buttons.length == data.user_ids.length - 1)) { //last choice
      alert('The other option was chosen by another player, thus you have to choose the remaining option.')
      return;
    }
  
negative.code:   background-color: lightgrey;
    padding-top:20px;
    /*font-size:100px;*/
    cursor: not-allowed;
    color:red;
  }
  /*.sample_or_choose {
  