The grid layout
The grid layout uses the Bootstrap columns to create panes for Dnn. Below is the standard pane layout which is installed with the Bootster theme, these pane layouts can easily be changed by editing an include file in the skin install directory.
You can also not use the flexbox grid that is included in Bootstrap 4, for more information about the Boostrap grid, click here.
We strongly recommend that you copy the 'content-areas.ascx' file and delete the rows and columns that you do not need for your website.
To do this, in the file directory of you site, navigate to:
/Portals/_default/Skins/DnnBootsterV2/layouts