Open SampleTable/html/app.html in the editor of your choice. This HTML file defines the root node that wraps all app content and any other HTML elements needed to render components in the app.

It must have at least one HTML tag, typically a <div>, as the root node of the app. To provide easy access, it is also a good practice to assign classes to the app root node and any other elements within the body of the app that you may need to find or update.

For this example, we need a root node and a table. To simplify the example, we are also going to hard code the table header. Remove the default tags for Hello World in app.html and add the following: