Container (Left) Alignment?

I'm new to GP Containers and have run into an issue.

I'm trying to have a block of text be 800 px wide and have it be left aligned. I would think that would be the default state (left aligned) so I must be doing something wrong.

I initially tried to just use Wordpress blocks for the text and then then containers/grids for the logo columns below, but the containers overlapped the Wordpress blocks of text which appeared above the containers.

Here's a screenshot of my current situation:
https://prntscr.com/109lppq

Layout > Container
https://prnt.sc/109mt72

And the url:
https://www.staging2.newinsightaccounting.com

I know I could fix the alignment using css, but seems to me editing css for each container seems very inefficient.

I also tried using just a grid by itself, but the only options for setting the width are % based.

Any feedback is appreciated.

Thank you!