Formulaire HTML5

<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Formulaire</title>
</head>

<body>
<div id="form_contact">
  <form action=""  method="post" name="contactForm" id="contactForm" accept-charset="utf-8">
    <fieldset>
      <label for="name" class="name">Name</label>
      <input name="name" id="name" type="text" placeholder="Nom, Prénom" required>
      <label for="mail" class="mail">Mail</label>
      <input name="mail" id="mail" type="email" placeholder="E-mail" required>
      <label for="male" class="male">Male</label>
      <input type="radio" id="male" name="sex">
      <label for="female" class="female">Female</label>
      <input type="radio" id="female" name="sex">
      <label for="phone" class="tel">Tel:</label>
      <input name="tel" id="tel" type="tel" placeholder="telephone" required>
      <label for="website" class="url">Website</label>
      <input name="url" id="url" type="url" placeholder="Website" required>
      <label for="message" class="message">Message</label>
      <textarea name="message" id="message" placeholder="Message..." required></textarea>
      <input id="submit" name="submit" type="submit" value="Submit">
    </fieldset>
  </form>
</div>
</body>
</html>