page not saving when adding larger fonts

Hello, I am trying to add a larger font on a page that already has regular sized text on it, but the page does not save the addition. I am trying to add the following: "We Invite You to Place Your Dreams in Our Care Congratulations on your engagement" Here are five reasons to use the services of a DestinationVows Specialist you can see it on this url: http://destinationvows.com/ I want to do the same on this other url: http://destinationvows.ca/ Please advice. Thank you Luis