Boombox banner is used to nudge users towards secondary actions on the page
Banner on To Do page
Boombox banner is alternative implementation of the legacy boombox (no longer used) which is for a simple, banner-style layout with an image, single paragraph of text and a call to action (for example a ghost button).
The Boombox Banner has two modifiers:
--intense, which changes the colour scheme to a more eye-catching white on pink, and
--ribbon which sets the image to the correct width when it's an SVG ribbon.