<form>
    <label for="firstname">First name: </label>
    <input type="text" name="firstname"  required>
    <br>
    <label for="lastname">Last name: </label>
    <input type="text" name="lastname"  required>
    <br>
    <label for="email">email: </label>
    <input type="email" name="email"  required>
    <br>
    <label for="password">password: </label>
    <input type="password" name="password"  required>
    <br>
    <input type="submit" value="Login!">
</form>