Please assist! Changing Header Image Text and Font Size – Catch Store

Hi, I would like to change the following please: 1) The font size of my Header Image/Media Title on my Home page to a smaller font so it does not hyphenate the word 'luxury' and 2) Change the Header Image/Media Title on my Shop page from 'Archive: Products: This is where you can add new products to your store' to 'Shop'. https://houseoflinen.co.za Thank you