How to increase the width of my collection list so it aligns to the banner width?

[R_P]

Hello,

I have tried different ways to increase the width of the collection list so it is the same width as my banner but it does not work. I want the edges of the collection list to be wider so there is no gap between the pictures and the sides of the page. The banner is wide enough to go from side to side of the page, but I have a gap for the collection list because the images of the collection list do not go from side to side like the banner.

Please how can I fix this issue?

Thanks 

[niraj_patel]

Hello @R_P 
Can you share store URL?