<!DOCTYPE html>
<html>
  <head>
    <title>Starting</title>
    <style>
      body {
        font-family: sans-serif;
        text-align: center;
        margin: 3em 2em;
      }
      section {
        margin-top: 1.5em;
      }
    </style>
  </head>
  <body>
    <section>
      <label>
        <input type="checkbox" id="connection" />
        Client connected to server
      </label>
    </section>
    <section>
      <button id="add">Add action</button>
      <button id="clean">Clean actions</button>
    </section>
  </body>
</html>

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Starting</title>
    <style>
      body {
        font-family: sans-serif;
        text-align: center;
        margin: 3em 2em;
      }
      section {
        margin-top: 1.5em;
      }
    </style>
  </head>
  <body>
    <section>
      <label>
        <input type="checkbox" id="connection" />
        Client connected to server
      </label>
    </section>
    <section>
      <button id="add">Add action</button>
      <button id="clean">Clean actions</button>
    </section>
  </body>
</html>

Add charset tag to demo
Add charset tag to demo
