dden;
    }

    code {
      font-family: "Roboto Mono", monospace;
      font-size: calc(1em - 1px);
    }

    .container {
      width: 500px;
      margin: 0 auto;
    }

    .controls {
      margin-bottom: 25px;
      text-align: center;
      text-transform: lowercase;
    }

    .value {
      font-size: 40px;
      font-weight: 500;
    }

    .slider {
      display: block;
      width: 100%;
      margin: 5px 0;
    }

    .plane {
      width: 500px;
      height: 250px;
      perspective: 500p