Page Specs

@planeo8: : You can find out the width of the body or sidebar using Inspect Element function of the browser by hovering over the content body or the sidebar.

Let me know if this helps you out.
Also for swift reply please post your issues and queries in the Catch Theme Officail Support Forum https://catchthemes.com/support-forum/forum/catch-evolution-free-theme/

Kind Regards,
Skandha