 transparent 50%);
    }
    #float-right {
      /* Note: In .container's writing-mode, "float: right" actually floats
         us towards the bottom. */
      float: right;
      inline-size: 100px;
      block-size: 200px;
      background: linear-gradient(to top, green 50%, transparent 50%);
      shape-outside: linear-gradient(to top, green 50%, transparent 50%);
    }
    </style>
  </head>
  <body>
    <p>
      The test passes if you see a green square. There should be no red.
    </p>
    <div id="