Add Additional Site Title Line to Header and Footer

Hi! I am trying to figure out how to add a second line to my site title in both the header and the footer. I currently have a child theme created but not activated for my site (link below). I am aware that the following code will do what I want in the header when placed in Appearance->Edit CSS.

#site-title a:after {
content: “Realtor”;
display: block;
}

However, I have not found an equivalent for the footer, so I would like to just make permanent changes via the child theme. Essentially what I want is:

Kaitlyn M. Huntley (Title)
Realtor (Title)

(Current Tagline Text I Am Too Lazy To Type)

Any help would be very appreciated!!

Edit: I am using the Unlimited Theme.

http://www.kaitlynmhuntley.com