Hey there pamelasask,
How are you doing today?
Generally for pages you should be able to do this by selecting full width page template but for single post pages you’ll have to use some custom CSS in which case you don’t have to use templates for pages either.
Please try adding the following CSS code in the style.css file of your child theme or add it in your site using the following plugin:
https://www.ads-software.com/plugins/simple-custom-css
body.origamiez-layout-right-sidebar #sidebar-center {
width: 100%;
border-right: none;
}
This should remove the sidebar on all pages and make your content full width.
Hope this helps ??
Cheers,
Bojan