How to centre page content

Hi, I’ve got a bit of a design query. Is there any way to centralise the content within the page in this case?

https://www.metronomixstudios.com/wordpress/#!/services/location-recording

I say that because it looks weird off to the left, it would be better if it was just all centralised. Can’t find any way of doing it though. The theme is John Smith.

Thanks.