src/index.html

<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
    <title>🕵️ Progressive Web App Feature Detector</title>
    <link rel="manifest" href="manifest.webmanifest">
    <style>
      *, *:before, *:after {
        box-sizing: border-box;
      }
      html,body {
        background-color: #ffd700;
        font-family: "HelveticaNeue-Light","Helvetica Neue Light","Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;
        font-size: 12pt;
      }
      body {
        display: flex;
        flex-direction: column;
        align-items: center;
      }
      h1 {
        color: #ff8032;
        font-size: 1.25rem;
      }
      h2 {
        color: #000;
        font-size: 1rem;
      }
      table {
        border: solid 1px #ff8032;
        border-collapse: collapse;
        width: 90vw;
        max-width: 400px;
      }
      tr, td {
        margin: 0;
      }
      tr:nth-child(even) {
        background-color: #ddd;
      }
      tr:nth-child(odd) {
        background-color: #eee;
      }
      td {
        padding: .25rem;
      }
      .feature {
        font-weight: bold;
      }
      .support {
        text-align: center;
        color: #00c500;
      }
      #userAgent {
        border: solid 1px #ff8032;
        background-color: #fff;
        padding: .25rem;
        margin-bottom: 1rem;
        width: 90vw;
        max-width: 400px;
      }
    </style>
    <script src="main.min.js"></script>
  </head>
  <body>
    <main>
      <h1>Progressive Web App</h1>
      <h2>🕵️ Feature Detector</h2>
      <p>
        Read the corresponding <a href="https://ai.google/research/pubs/pub46739">research paper</a>.
      </p>
      <div id="features">
        <div id="userAgent"></div>
        <table>
          <tr id="placeholder">
            <td>
              <svg version="1.1" id="loader-1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="40px" height="40px" viewBox="0 0 40 40" enable-background="new 0 0 40 40" xml:space="preserve">
                <path opacity="0.2" fill="#000" d="M20.201,5.169c-8.254,0-14.946,6.692-14.946,14.946c0,8.255,6.692,14.946,14.946,14.946 s14.946-6.691,14.946-14.946C35.146,11.861,28.455,5.169,20.201,5.169z M20.201,31.749c-6.425,0-11.634-5.208-11.634-11.634 c0-6.425,5.209-11.634,11.634-11.634c6.425,0,11.633,5.209,11.633,11.634C31.834,26.541,26.626,31.749,20.201,31.749z"></path>
                <path fill="#000" d="M26.013,10.047l1.654-2.866c-2.198-1.272-4.743-2.012-7.466-2.012h0v3.312h0 C22.32,8.481,24.301,9.057,26.013,10.047z" transform="rotate(12 20 20)">
                  <animateTransform attributeType="xml" attributeName="transform" type="rotate" from="0 20 20" to="360 20 20" dur="0.5s" repeatCount="indefinite"></animateTransform>
                </path>
              </svg>
            </td>
            <td>Detecting Progressive Web App features…</td>
          </tr>
        </table>
        <template id="featureRow">
          <tr>
            <td class="feature"></td>
            <td class="support"></td>
          </tr>
        </template>
      </div>
      </main>
  </body>
</html>