css/docs/content/components/flash-banner.md

title	path	status	status_issue	source	symbols
Flash banner	components/flash-banner	Review	https://github.com/github/design-systems/issues/99	https://github.com/github/github/tree/master/app/assets/stylesheets/components/flash-banner.scss	flash-banner is-signed-in is-signed-out org-privileges-tour-dismiss signed-in-tab-flash signed-out-tab-flash stale-session-flash

Needs documentation.

A banner rendered at the top of the page and a warning banner shown when you log in/out in another tab.