Hi Enervia,

Thank you for your message, let me help you.

The position of the sidebar from the single post pages is connected to the sidebar on the summary blog page (https://enervia.net/blog/). If the sidebar is hidden on the summary blog page it is hidden on the single post pages as well.

If you would like to show the sidebar on the single post pages but hide it on the summary blog page you can follow these steps:

• Edit your summary blog page (https://enervia.net/blog/) and set the sidebar position to "Right" (see attached image below)
• Save the page
• Navigate to Appearance -> Customize -> Additional CSS and add the following CSS:

/* hide sidebar on summary blog page */
body.blog .col-md-3 { display: none; }
@media (min-width: 992px) { .col-md-9 { width: 100%; } }

Hope this helps, let me know if you have any questions!