index.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" />
    <!-- CSS Link -->
    <link rel="stylesheet" href="style.css" />
    <!-- Font-Awesome CDN Link -->
    <link href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css' rel='stylesheet'>
    <title>Document</title>
  </head>
  <!-- The Loading Function (reload to see) -->
  <body onload="myFunction()">
<div id="loading"></div>
<!-- The Side Navigation Bar' -->
      <div class="sidenav">
        <!-- A Default Space Inheriting Function (changable) -->
        <div class="v_space"></div>
      </div>
      <!-- The JavaScript For The Loading Function -->
    <script>
    var preloader = document.getElementById('loading');
        function myFunction(){
          preloader.style.display = 'none';
        }
    </script>
  </body>
</html>