Lining images across a page

Hi Guys,
I have a page here: https://ilase.co.uk/blog/iLase_wp/

I have two rows each containing 3 columns, which in turn, each contains an image which links to another page. all looks well on the computer and even the iPad, but does not display well on my iPhone. The header logo also looks off on the phone. I’m sure I’m missing something regarding a widget of some sort but I am baffled. Any help would be massively appreciated