#vastInput {
    width: 0;
    height: 0;
    overflow: hidden;
  }
  
  #vastModal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #5f5f5f;
    opacity: 0.95;
    display: none;
    z-index: 10;
  }
  
  #vastPreview {
    float: left;
    position: fixed;
    top: 0;
    left: 0;
    border: 4px solid #a5a2a2;
    border-radius: 4px;
    font-size: 0;
    line-height: 0;
    display: none;
    z-index: 11;
  }
  
  #vastPreview .vastButtons {
    width: 36px;
    position: absolute;
    bottom: 0;
    right: -44px;
  }
  
  #vastPreview .vastButtons .vastOk {
    border: 4px solid #f5f5f5;
    border-radius: 4px;
    width: 28px;
    height: 28px;
    font-size: 0;
    line-height: 0;
    background-image: url('ok.png');
    background-repeat: no-repeat;
    transition: background-image 0.2s ease-in-out;
    cursor: pointer;
  }
  
  #vastPreview .vastButtons .vastOk:hover {
    background-image: url('ok-green.png');
  }
  
  #vastPreview .vastButtons .vastCancel {
    margin-bottom: 4px;
    border: 4px solid #f5f5f5;
    border-radius: 4px;
    width: 28px;
    height: 28px;
    font-size: 0;
    line-height: 0;
    background-image: url('cancel.png');
    background-repeat: no-repeat;
    transition: background-image 0.2s ease-in-out;
    cursor: pointer;
  }
  
  #vastPreview .vastButtons .vastCancel:hover {
    background-image: url('cancel-red.png');
  }