        display: block;         /* expands the container if preload=none */
        max-width: 540px;       /* allows the container to shrink if small */
        aspect-ratio: 16 / 9;   /* set container aspect ratio if preload=none */
      }

      video {
        width: 100%;      /* prevents video to expand beyond its container */
      }

      .examples {
        margin-top: 20px;
      }
    </style>
  </head>
  <body>
    <!-- The main tag is used to exclude other body content in https://www.media-ch