Add class attribute to svg

[Nico Preston]

I'm trying to add a class attribute to a diagrams.net (draw.io) svg, so I can style it later with CSS. The diagram was created with the app and saved as type ".svg"

Consider two simple shapes:

I can "edit data" to add a class to shape1:

This shows up in Extras>Edit Diagram:

But when I open the svg file in a text editor, the class cannot be found.  I honestly have no idea where diagrams.net is even saving the data, as there is only the one .svg file with no metadata. This is the case if I open the diagrams.net .svg file or export as svg.

Any help would be appreciated. I've tried .drawio format, tags and styles without success.

Thanks,

Nico

[Arijit Aich]

facing the same issue.... Just cant edit the labels