Changing font weight in one line header

Hi,

I’m very new to website building and have very little experience in CSS.

I’m building a website for my business at the moment

I’m using the Sydney theme and the widget I’m using for the services is called Sydney FP: Services type A.

On my headings, I would like it to have different weight for the fonts.

So example Our Services, I would like the word Our to be “bold” where as Services to be “light”.

Any help would be greatly appreciated!

The page I need help with: [log in to see the link]