index.html

<!doctype html>

<body background="https://cdn.pixabay.com/photo/2016/10/29/01/35/abstract-1779605_960_720.png">
  <title>Welcome to my site!</title>
  <style>
    body {
      text-align: center;
      padding: 150px;
    }

    h1 {
      font-size: 50px;
    }

    body {
      font: 20px Helvetica, sans-serif;
      color: #FFFFFF;
    }

    article {
      display: block;
      text-align: left;
      width: 950px;
      margin: 0 auto;
    }

    a {
      color: #dc8100;
      text-decoration: none;
    }

    a:hover {
      color: #FFFFFF;
      text-decoration: none;
    }
  </style>

  <article>
    <h1>This is the home of my site but it is currently under construction</h1>
    <div>
      <p>Sorry for the inconvenience, please check back later for new content</p>
    </div>
  </article>
</body>