x50.svg);
      }

      div.intersect {
        left: 120px;
        mask-composite: intersect;
        mask-image: url(support/blue-100x50-transparent-100x50.svg),
                    url(support/transparent-100x50-blue-100x50.svg),
                    linear-gradient(rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 1) 100%);
      }

      div.subtract {
        left: 230px;
        mask-composite: subtract;
        mask-image: url(support/blue-100x50-transparent-100x50.svg),
                    url(support/blue-100x5