Fullwidth rows no longer fullwidth

Fullwidth rows are no longer fullwidth, instead leaving about an 8px gap on the right. You can see this on your demo site (or see attached screenshot): https://hb-themes.com/themes/highend_wp/

I’ve traced the issue to the following declaration in style.css:

#main-wrapper .fw-section, #main-wrapper .vc_row[data-vc-full-width] {
    left: 50%!important;
}

Unchecking that in the inspection panel causes the rows to go fullwidth again, but I’m not sure how to correct this since I’m not entirely sure what that declaration is there for.