
    input[type="checkbox"].toggle:focus {
      outline: 0;
    }

    .anim {
      transform: translate(-50%, -50%);
      position: absolute;
      top: 50%;
      left: 50%;
      z-index: -1;
    }

    .anim:before {
      position: relative;
      content: "";
      display: block;
      margin-top: 100%;
    }

    .anim:after {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 0;
      right: 0;
      border-radius: 50%;
    }

    .node .toggle:checked + .ani