om-trigger-conversion class on submit button

<form action="https://example.com/form.php" method="POST">

  <label for="om-first-name">First Name</label>

  <input id="om-first-name" type="text" name="first_name">

  <label for="om-email">Email Address</label>

  <input id="om-email" type="email" name="email" required>

  <input type="submit" class="om-trigger-conversion" value="Submit Now!">

</form>