Changing Confirmation Title Text Changes Font & Size!

Hello Team

On ~

When I changed the title text, the resulting font and size of the same title got changed!

<td colspan=”2″>[app_confirmation button_text=”Request Appointment” title=”Review Details and Request Appointment:” confirm_text=”Hello! I have received your requested appointment and shall be in touch shortly. Thank you! William” name=”Name:” email=”Email:” phone=”Phone:” address=”Address:” note=”Comments:” gcal=”Add appointment to my Google Calendar”]</td>

How can the font and font size be reverted back to the original using the new text?