Changing Confirmation Title Text Changes Font & Size!

Hello Team
On picturechesttinytoes.com/make-an-appointment ~
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?