NotificationBar NotificationBar is a fixed positioned panel either at the top or the bottom of the page.
PrimeFaces Rocks!
<p:notificationBar position="top" effect="slide" styleClass="top" widgetVar="bar">
    <h:outputText value="PrimeFaces Rocks!" style="font-size:36px;" />
</p:notificationBar>

<p:commandButton value="Show" onclick="PF('bar').show()" type="button" icon="ui-icon-arrow-1-s"/>
<p:commandButton value="Hide" onclick="PF('bar').hide()" type="button" icon="ui-icon-arrow-1-n"/>
                
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All rights reserved.
Running PrimeFaces-6.1.4 on Mojarra-2.2.10.