example/403.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Access Denied</title>
    <style>
      body {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        margin: 0;
        font-family: 'Arial', sans-serif;
        background-color: #328ba8;
        color: #ffffff;
      }

      .access-denied-container {
        text-align: center;
        padding: 50px;
        border-radius: 10px;
        background: rgba(0, 0, 0, 0.7);
      }

      h1 {
        font-size: 5em;
        margin: 0;
      }
    </style>
  </head>
  <body>
    <div class="access-denied-container">
      <h1>Access Denied</h1>
      <p>Host: {{.Host | stripHTML}}</p>
    </div>
  </body>
</html>