"name":"Build your first SharePoint client-side web part",
"description":"Client-side web parts are client-side components that run in the context of a SharePoint page. Client-side web parts can be deployed to SharePoint environments that support the SharePoint Framework. You can also use modern JavaScript web frameworks, tools, and libraries to build them.",
"description":"Starting with SharePoint Framework v1.8, web parts can be made aware of any section backgrounds and use these colors to improve the appearance of a web part when hosted in a section with a different background.",