pattern-library checked
NCI Design System Site Alert
Documents site alerts for urgent sitewide information, standard and slim variants, emergency and info modifiers, optional close and expand behavior, top-of-page placement, and combining multiple messages into one alert.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Site alert | Choose site alert when urgent sitewide information must appear by default on every affected page near the top of the site. | The site alert appears before ordinary page content and is reachable from any affected route, not just the home page. | NCI documents site-alert standard, slim, emergency, info, close, and expand variants plus top-of-page placement and combining related messages. |
Evidence Role
This source is treated as pattern-library evidence. Use it to validate the decision rules above, not as a visual style reference.
Publisher: National Cancer Institute Design System. Last checked: .