CSS code on a centralized part

Hey!

I would like to know if it would be possible to have the CSS part for mermaid in a centralized way, so when creating several mermaid flowcharts and if something on the layout would need to be updated, we only need to update in one place, instead of need to update each individual flowchart.

Do you know if that would be possible and if so, how to do it?

Many thanks, really appreciate any feedback,
Xênia