Oh! That makes sense! Thanks @genietim 

@Sarah Lane the style mentioned here has actually the opposite function of what @MooseHead said (sorry), I think: this is the stylesheet you can use in the custom “Pipefy Apps” (i.e. the modals that you can trigger e.g. with the card badges) such that these e.g. modals look more like Pipefy and therewith integrate better into the Pipefy interface.

Ah OK @MooseHead thanks. I've done some of that without coding on the customization page for the public form. Gotta love the low-code and no-code options that are available!

It would be to better match your branding: colors and fonts that match your company’s. 

Sorry if this is a silly question but: what is this used for? I thought css was for web development. With Pipefy already being beautiful to look at, when would someone need to modify or use the css elsewhere?

@MooseHead thanks for let me know. 

You can access the same content here: 
https://developers.pipefy.com/ 

Unfortunately, the link goes to a 404 page. Possible to update?