<form method="POST" action="/register.php">
  <label>
    Имя:
    <input type="text" name="fullname" required minlength="2" />
  </label>

  <label>
    Email:
    <input type="email" name="email" required />
  </label>

  <label>
    Пароль:
    <input type="password" name="password" required minlength="8" />
  </label>

  <button type="submit">Зарегистрироваться</button>
</form>