src/examples/async-todo-example/index.html

<html>
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Async Todo Purity App</title>
    <style>
      .checked {
        color: grey;
      }
      li button {
        display: none;
      }
      li.checked button {
        display: initial;
      }
      li.highlighted {
        background-color: yellow;
      }
      #spinner {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        background-color: rgba(0, 0, 0, 0.1);
        background-image: url(./spinner.svg);
        background-position: center;
        background-repeat: no-repeat;
        display: none;
      }
      #spinner.visible {
        display: initial;
      }
    </style>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="./index.js"></script>
  </body>
</html>