2012 Child Theme Header Text

Hi, currently editing a 2012 child theme, I want to change the ‘header text’ (when you go to ‘appearance’, ‘customise’, ‘site title and tag line’ to be positioned on the right of the screen and not the left (as it is by standard).

Any ideas which part of the css I need to edit, I have looked through it but can’t find anything currently being ‘told’ to be left aligned?

Thanks!