An announcements ticker web part for SharePoint
You want a band of announcements that rotates across the top of your intranet, so people see the important ones without hunting for them. A payroll cut-off, a VPN maintenance window, a mandatory patch. Here is a web part for it.

It reads a SharePoint list. The message comes from the Title column. Two columns are optional. A Choice column Severity with Info, Warning or Critical sets the colour and the tag, and a Link column lets each announcement point somewhere.
You do not have to build the list by hand. The Provision-IntranetLists.ps1 script in the package creates the Announcements list with those columns and a few sample rows.

In the property pane you point it at the Announcements list, set how many to show, how often it rotates, and whether to show the arrows and dots. It runs on sample data until you turn that off, so you can see it working straight away.
The Announcements Ticker is part of my open source SPFx Intranet Suite, a set of web parts for a modern SharePoint intranet. Install the package once and it shows up in the toolbox under Intranet Suite.