Centre and/ or enlarge Portfolio thumbs on homepage

Hi, I absolutely love the Shapely Theme but I am struggling with the portfolio widget on the homepage. I only have 2 projects in my portfolio and they align to the left on the homepage. Is there a way of centring the thumbs and ideal increasing their size? I have searched for CSS but can’t seem to find anything that works.

The attached pic shows what I have at the moment and what I’d like centred.

Thanks so much.

Hi there,

Could we get some CSS try some custom CSS to center and enlarge them.