How do I use jquery to change every instance of "font-family: 'Arapey',sans-serif;" to "font-family: 'Arapey',serif;" in runtime?

Hi all,

could someone please tell me how I could use jquery to change every instance of "font-family: 'Arapey',sans-serif;" to "font-family: 'Arapey,serif';" in runtime on my page by force (maybe also with an ! important at the end)?

For some annoying reason in my wordpress site when I choose google font arapey it appends "sans-serif" at the back of it, which is completely wrong as it is a "serif" font and I want it like that.

thanks in advance