Hi There,
In this issue, you could use the below CSS.
1. Open custom.css
2. Add the below css code:
.topic--sidebar,
.topic--breadcrumb .toggle-sidebar {
display: none;
}
.topic--body {
width: 100%;
}
Please Note: the way is not a proper way to remove/hide the sidebar. In this issue you need to hire someone to customize the style for you in a proper way. This is because, there will need some extra HTML, CSS and JS coding.
Best Regards,
ThemeLooks Support Team