We'll create fresh WordPress site with Bootstrap's Columns Controller installed. You have 20 minutes to test the plugin after that site we'll be deleted.
With “Bootstrap’s Columns Controller” you can easily use colums to customize your content
Documentation
To insert columns to the post/page, go to your post/page and click the button above the WP editor “Add Columns”. After that, choose columns type and click “Save”.
In editor you can easily insert the content into the columns.
You can remove the row click the button in the editor “Remove the row”.