Wordpress Website - Visual optimisation/tweaking

We have built a website in Wordpress, with pages, content, images, metatags, etc.

We need this tweaking as there seems to be an issue with the theme - The pages look ok while editing, but once finalised, the pages are full width across the page, we can't edit the container length, some features and customisation doesn't display correctly.

We are looking for someone to help tweak the visual element of the website to display better.

https://lgbtq-accountant.co.uk/