<h2>Inscription</h2>

<form name="f" onsubmit="return verifier()">
  <p>
    <label>Nom :</label>
    <input type="text" id="nom">
  </p>
  <p>
    <label>Âge :</label>
    <input type="text" id="age">
  </p>
  <p>
    <input type="checkbox" id="accord"> J'accepte
  </p>
  <input type="submit" value="Envoyer">
</form>