index.html

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

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" type="text/css" href="styles.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.2/css/all.min.css" />
  <title>Link Generator for WhatsApp</title>
</head>

<body>
  <div class="container">
    <h1>Link Generator for WhatsApp</h1>
    <input type="text" id="ddd" placeholder="Your DDD (whith +)">
    <input type="text" id="numero" placeholder="Your number">
    <textarea id="mensagem" placeholder="Your message"></textarea>
    <div class="text-link">
      <p>Link (Click to copy)</p>
    </div>
    <button id="gerarLink">Generate link</button>
  </div>
  <script src="script.js"></script>
</body>

</html>