How to Add a Single File to Multiple Folders in Google Drive. https://www.labnol.org/internet/add-files-multiple-drive-folders/28715/

See StackOverflow: https://stackoverflow.com/questions/22000754/responsive-bootstrap-jumbotron-background-image

How to Create a White Background and Keep the Original Shadows

http://www.wpbeginner.com/plugins/how-to-show-or-hide-widgets-on-specific-wordpress-pages/ Two WordPress Plugins to Control Widgets on Specific Pages: Widget Logic: Widget Logic Widget Context: Widget Context