Nov
11
2019
0
By david.mcmeans
https://www.heididev.com/add-class-body-based-path-alias-drupal-8
Turn on twig debug.
Locate view template in use.
In my case, they were in
profiles/cms/themes/contrib/bootstrap/templates/views
In views-view.html.twig I found the div containing the views-content class.
Adding "container" to views-content and to views-header allowed a full-width content section to behave with expected margin yet have full width background image.