chromium/chrome/test/data/android/edge_to_edge/viewport-fit-cover.html

<html>
  <head>
    <meta charset=UTF-8">
    <title>E2E Cover</title>
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0, viewport-fit=cover"
    >
    <!-- Stylesheet -->
    <style>
        * {
            box-sizing: border-box;
        }
        [hidden] {
            display: none !important;
        }
        body {
            min-height: 100vh;
            width:100%;
            border: 10px solid orange;
            margin:0
        }

        .pink-footer-inset {
            position: fixed;
            left: 25%;
            bottom: 0;
            padding-bottom:env(safe-area-inset-bottom);
            width: 50%;
            background-color: pink;
            color: black;
            text-align: center;
        }
    </style>
  </head>

  <body style="background-color:green;">
    <p>Test page for viewport-fit and notch support</p>
    <h2>
       Uses viewport-fit=cover
    </h2>
    <div class="pink-footer-inset">Footer</div>
  </body>
</html>