Hello,

Make two rows: one for banner one for a testimonial and make the row for banner full stretched. CSS would not be effective in this case. Even if you set 100% width, the element will be limited by covering row padding and width.

I cannot login your site, I have recreated the banner carousel on the testing host. Here is the result you will get on full width: http://prntscr.com/kgoydh 1920px

Here is the result you will get on 2500 http://prntscr.com/kgozfy

Best Regards