Evenly Aligned Image Blocks Help

Site URL: https://churchco-op.squarespace.com

Hi there,

I am trying to fix these image blocks to evenly align for a client site and followed code from the forum (shown below) but got this (image attached) as my result. 

#small-budget {margin-left: auto; margin-right: auto; display: block; width: 75%;}

I need help on how to get rid of the blue on the sides or the right css code to properly get three images to fit without taking up the entire page. 

Thanks in advance for your help!

The website is https://churchco-op.squarespace.com and the password is 2020. 

I see you solved?

Quote

@tuanphan is there a way to make the blocks bigger? These blocks are a bit small that I ended up with. I was hoping to have them be a bit bigger. Thanks!

You can reduce left/right column width

@tuanphan this is the result of that:

That's my problem. I can't get them evenly spaced with the same amount of margin on the sides. I would like them to be the size of the blue and purple block versus the small yellow block in the middle. If I can't find a solution then that's my fallback. 

You can remove left/right column I can give code to create left/right margin.

@tuanphan that would be great, thanks! I've tried everything and nothing seems to work.