dark themed template website with neon text

(please note that i am not an expert, this is actually my first post as well)

<!DOCTYPE html>
<html>
  <head>
    <title>Website</title>
    <style>
      @import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');
      
      * {
        font-family: 'Poppins', Sans-Serif;
        color: white;
        background: #1f1b24;
        text-align: center;
        text-shadow: 0 0 8px white;
      }
      
      h1, h2, h3, h4, h5, h6 {
        text-transform: uppercase;
        color: #03dac6;
        text-shadow: 0 0 12px #03dac6;
      }
      
      hr {
        height: 3px;
        width: 90%;
        background: #999;
        border: none;
        box-shadow: 0 0 12px #999;
      }
      
      ul, li {
        text-align: left;
      }
    </style>
  </head>
  <body>
    <h1>Website</h1>
    <hr>
    <p>Hello and welcome to my website.</p>
    <br>
    <h2>Navigation</h2>
    <ul>
      <li><a href="#">About</a></li>
      <li><a href="#"><abbr title="Frequently Asked Questions">FAQ</abbr></a></li>
      <li><a href="#">Contact</a></li>
    </ul>
  </body>
</html>