I've not used css before and I had followed the old instructions of copying, and modifying, the report.css into a multimedia object. I now realise that, in the latest build, html notes use the same report.css as reports in the system folder.
However, using the former method, I think I found a bug.
If I use the View - Attach css menu, all is fine.
But, if I control-click in the html text of the note and select HTML Editing - Attach css, it puts the right code in the correct position but also it adds "(null)" at the cursor position, which isn't right.
Cheers
Mick