[Theme: Total] Reduce the blank space between the menu and the content

Hello,

As the title indicates, I’d like to reduce/remove the blank space between the menu and the content, and the page title and the table (e.g., safety improvement porject and Crossing details). See here for example, https://gradex.ca/home-sub/safety-improvement-project/

I am currently running it on a theme called Total..

I have tried adding custom css with codes available but no luck..

Any suggestion on this is greatly appreciated.

Thanks!