Using AngularJS 1.x, I used to do code like this to include static HTML content on a page:
...
<body>
<!-- Banner -->
<ng-include src="'banner.html'"></ng-include>
<!-- Navigational thumb -->
<div>
<div>
<ng-include src="'navbar.html'"></ng-include>
</div>
...
I would like to know how to do that in React (where I'm a total beginner).