Kako napraviti kontakt formu klikom na link?

U ovome primjeru kreiraćemo jednostavnu kontakt formu koja se otvara klikom na link. 



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

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <title>IT TUTORIJALI | Kontakt forma sa gradient pozadinom</title>
  <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Varela+Round">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
  <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
  <style>
    html,
    body {
      min-height: 100%;
    }

    body {
      background: #ff5e63;
      /* Rezervna verzija za pretraživače koji ne podržavaju gradijente */
      font-family: "Varela Round", sans-serif;
      background: linear-gradient(#ff9968, #ff5e63) no-repeat;
    }

    .form-control {
      border-color: #d7d7d7;
      box-shadow: none;
    }

    .form-control:focus,
    .btn:focus {
      border-color: #a177ff;
      box-shadow: 0 0 8px #c2a8ff;
    }

    .contact-form {
      width: 500px;
      margin: 0 auto;
      padding: 40px 0;
    }

    .contact-form form {
      background: #fff;
      padding: 40px;
      border-radius: 6px;
    }

    .contact-form h1 {
      text-align: center;
      font-size: 50px;
      margin: 0 0 15px;
    }

    .contact-form .form-group {
      margin-bottom: 20px;
    }

    .contact-form .form-control,
    .contact-form .btn {
      border-radius: 2px;
      min-height: 40px;
      transition: all 0.5s;
      outline: none;
    }

    .contact-form .btn {
      background: #a177ff;
      font-size: 16px;
      min-height: 50px;
      border: none;
    }

    .contact-form .btn:hover,
    .contact-form .btn:focus {
      background: #8048ff;
      outline: none;
    }

    .contact-form .btn i {
      margin-right: 5px;
    }

    .contact-form label {
      color: #bbb;
      font-weight: normal;
    }

    .contact-form textarea {
      resize: vertical;
    }

    .hint-text {
      font-size: 15px;
      text-align: center;
      padding-bottom: 25px;
      opacity: 0.8;
    }
  </style>
</head>

<body>
  <div class="contact-form">
    <form action="/examples/actions/confirmation.php" method="post">
      <h1>Kontaktiraj nas</h1>
      <p class="hint-text">Voljeli bismo vas čuti, javite nam se ako imate pitanja u vezi s našim proizvodima ili uslugama.</p>
      <div class="form-group">
        <label for="inputName">Ime</label>
        <input type="text" class="form-control" id="inputName" required>
      </div>
      <div class="form-group">
        <label for="inputEmail">Email</label>
        <input type="email" class="form-control" id="inputEmail" required>
      </div>
      <div class="form-group">
        <label for="inputMessage">Vaša poruka</label>
        <textarea class="form-control" id="inputMessage" rows="5" required></textarea>
      </div>
      <button type="submit" class="btn btn-primary btn-block"><i class="fa fa-paper-plane"></i> Pošalji poruku</button>
    </form>
  </div>
</body>

</html>