.ad-container {
  font-size: 15px;
  line-height: 18px;
  position: absolute;
  right: 0;
  bottom: 0;
  color: #fff;
  input[type='checkbox'] {
    visibility: hidden;
  }

  input[type='checkbox'] + label:before {
    display: inline-block;
    width: 16px;
    height: 16px;
    margin: -2px 4px 0 0;
    content: '';
    cursor: pointer;
    vertical-align: middle;
    border-radius: 3px;
    opacity: 0.64;
    border: 1px solid #fff;
  }
  input[type='checkbox']:checked + label {

    &:before {
      opacity: 1;
      background: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iOSIgaGVpZ2h0PSI3IiB2aWV3Qm94PSIwIDAgOSA3IiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjx0aXRsZT5TbGljZSAxPC90aXRsZT48cGF0aCBkPSJNMy4yOSAzLjgwNEwxLjI0MyAxLjc3OCAwIDMuMDIyIDMuMjkgNi4zM2w1LjA2Ni01LjA4Nkw3LjExIDAgMy4yOSAzLjgwNHoiIGZpbGw9IiMxRUFFRDkiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvc3ZnPg==");
      background-color: #fff;
      background-repeat: no-repeat;
      background-position: 4px 5px;
    }
  }
  label {
    margin-right: 8px;
    margin-left: 4px;
    cursor: pointer;
  }
  #ctAnchor {
    display: block;
  }
}