Modifying the masthead with the Vantage theme.

Hello i am trying to see how i can modify the masthead for Vantage. The specific text i want to change is the “Call me maybe!”, i can change the title and name of the page located on the left hand side but i wish to either just remove or change the tag line. I am a very basic user just an fyi, i have been using page builder and do not understand any of the coding text.

Thanks