GeneratePress Squeeze Page Builder

Hi support, I tried to create a squeeze page by following the video tutorial.
However, it did not work out for me.

I adjusted the container width in the layout, but that affected all other pages in the blog.
Do you have a means of creating a squeeze page with an adjusted container width,
that does not affect the other pages?

Here is the page I was creating :
https://www.tipstoyourhealth.com/living-healthy

Thanks in advance
Adrian Brown