Social Theme: Font type/size and translation

Hi there,
I need some help here !

"Number 1" (attached file) - how can I change the picture size ?

"Number 2" (attached file):
* How can I change the font, font size and add some paragraphs?
* which po/mo file I have to edit to translate that words to br-portugese ?

"Number 3" (attached file):
* which po/mo file I have to edit to translate that words to br-portugese ?

Thank you very much,
Rodrigo