about.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="./header.css">
  <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.css">
  <title>立体导航栏</title>
</head>

<body>
  <nav>
    <div id="logo">LOGO</div>
    <input type="checkbox" id="menu-button">
    <label class="menu-button" for="menu-button">
      <i class="fa fa-bars fa-2x" aria-hidden="true"></i>
    </label>
    <ul id="nav-menu">
      <li>Home</li>
      <li>Services</li>
      <li>Products</li>
      <li>Clients</li>
      <li>Contact</li>
    </ul>
    <div id="nav-user-link">待填充</div>
  </nav>
  <article>

  </article>

</body>

</html>