Tagline Font Resizing

Hi,

I have been working on my website for around three weeks and I am very nearly there with it. I am using the Origin theme and have managed to change the colours of the various borders, change fonts, etc. However, I have hit a brick wall with the tagline – the Home page has it in bold whereas all other pages are just normal weight. I want all pages to have the same size font tagline; preferably smaller as it is currently clashing with my logo and in italics.

I’ve been going up and down the Style sheet for three hours now and I know it is a simple fix and no doubt starring right at me?!

Any help would be really appreciated as this is the last bit that I want to fix before I concentrate on the SEO stuff (using the Yoast plugin).

My website is http://www.all-the-little-details.co.uk

Many thanks in advance,
Nicola