GD Bottom section Formatting Issue

Good Afternoon
There is a formatting issue that exist between the GD Bottom section and GD Right section where there is overlap in the background and alignment of headings particularly for the bottom section.

I have placed widgets in the bottom section, but when the sidebar is longer than the content area the bottom widgets start immediately to the bottom of the content area and not the bottom of the sidebar area. Some good examples is located here – https://www.trinigo.com/trinidad-tobago/food/tags/bacolet/foreign-food/
https://www.trinigo.com/trinidad-tobago/shop/hair-products-supplies-weave/

I have observed it on detail pages, listing pages not sure about search pages.

Further I use the Avada theme and not sure if there may have been any impact.

Thanks
Dale