Left column custom page. You can add any HTML content you want here.

This page displays on 3-column Bootstrap layout only.
  

3-column display rules (Bootstrap4):

* full-width (100%) content area.
  
* layout is 2/7/3 grid.
  
* left and middle columns display side-by-side in 768px or above width.
  
* left column displays under middle column below 768px width.
  
* right column displays under left and middle columns below 992px width.