Yes! Glad to hear!
And yes, overlaying the CSSRenderer on a WebGL renderer is a great use case.
You can even do some fancy stuff by putting the CSS renderer behind the WebGL rendererer and doing some tricks to punch through the webGL revealing the CSS renderer behind it… which lets you make it appear as if the HTML is truly inside your 3d scenes… But it is pretty tricky to implement that, so I’d definitely start with CSS on top until you get comfortable with it.