Web Components · Global
<mmm-flash-bar>
Inline announcement / notification banner.
What it is
A top-of-page banner used for announcements, sale callouts, and shipping promos. Dismissable; remembers dismissal per session.
When to use
- Top of the page above the header
- Inline order-confirmation messages
- Maintenance announcements
Attributes
AttributeTypeDefaultDescription
data-tonestringinfoinfo, success, warning, or critical.data-dismissiblebooleantrueShow a close button.idstring—Unique element identifier.classstring—Custom CSS class list.hiddenbooleanfalseHide the element without removing it from the DOM.Examples
Announcement
Standard announcement bar.
<mmm-flash-bar data-tone="info">
Free shipping on orders over $50.
</mmm-flash-bar>