How To Call Correct CSS For Page

Hi,
I am trying to replicate a page https://www.haylockpittman.co.uk/ onto https://www.haylockpittman.co.uk/new-refurb-publish/ but it can’t get the images at the top to align correctly.
They call a div id ‘outer’ for the sizing but it appears correctly on te home page and not on the new page.
How can I change it so it calls the correct code on the new page without messing up the original page.

Thanks in advance for any guidance.

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