Hello,
Thanks for contacting us.
Please send page detail which page you want full-width, Is it blog post page or single blog post page.
Kindly, Share your website URL so I can check and help with the issue.
Looking forward to your reply.
Thanks
When I create an individual post (not a page), there is a sidebar there. I wish this post did not have a sidebar, ie, it was like a page, full width.
Hello,
Thanks for contacting us.
You can do it using child theme
Please go through this document for creating child theme https://codex.wordpress.org/Child_Themes and http://docs.themeisle.com/article/14-how-to-create-a-child-theme then you can override parent theme content-single.php and content-single-download.php files and modify it as per your liking.
For Override file in the child theme please check this document
https://code.tutsplus.com/tutorials/a-guide-to-overriding-parent-theme-functions-in-your-child-theme–cms-22623
or you can use the following CSS code to do it
Please go to Appearance > Customize > Additional CSS from
past below code.
.single.single-post #sidebar-secondary {
display: none;
}
.single.single-post #primary {
width:100%;
}
Hope you find the above information helpful.
Thanks