r {
          background: #333;
          width: 75%;
          height: 75%;
          border-radius: 50%;
          content: '';
          margin: auto;
          position: absolute;
          top: 0;
          left: 0;
          bottom: 0;
          right: 0;
        }
        @-webkit-keyframes load3 {
          0% {
            -webkit-transform: rotate(0deg);
            transform: rotate(0deg);
          }
          100% {
            -webkit-transform: rotate(360deg);
            transform: rotate(36