Styling RadzenTable like in demo

I want to use a RadzenTable with the same styling shown in the demos: Rounded corners and the header row should be shaded.

If I copy the code from the demo, I just get square corners and no shading on the header row. I’ve used the Chrome Debugger on the demo page and I don’t see anything assigning background-color or border-radius via css. (I’m not a .css ninja, so I might be missing something)

How do I get the RadzenTable to have rounded corners and a shaded header? I can do it the hard way and write custom .css or make a custom theme, but if there is an easier way, please let me know.

This demo is using our premium Material3 theme by default.