Showing a different background colour in Vim past 80 characters

Question

I have seen Vim 80 column layout concerns, but the answer there highlights only actual content that goes over the 80 character mark. I want to have a 100+ column Vim window

Answer 1

Highlight 81 column

:set textwidth=80
:set colorcolumn=+1

You may also make some styling:

:hi ColorColumn guibg=#2d2d2d ctermbg=246