---
title: Flash banner
path: components/flash-banner
status: Review
status_issue: 'https://github.com/github/design-systems/issues/99'
source: 'https://github.com/github/github/tree/master/app/assets/stylesheets/components/flash-banner.scss'
symbols:
  [
    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.