How to Create a Sticky Sidebar in WordPress
For more useful info, read the post - https://themeskills.com/create-sticky...
To create a sticky sidebar in WordPress, you'll have to install a plugin called WP Sticky Sidebar.
It should work fine right after you have activated it unless your WordPress theme has uncommon CSS classes/ids for the sidebar and main content.
If that's the case, read the post to find what to do if the WordPress sticky sidebar won't work.
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