Hi Marcian,
You need to keep all the resources in projectname/themesource/modulename/public
Please refer below link for your reference-
https://forum.mendix.com/link/questions/108971
Hope it helps you
Thanks
Hi Marcian,
Its good practice to create a UI resource module for your custom styling/branding guidelines.
There you can add your resources to the UI resource module/public folder, which contents will be available in the deployment folder.
Check out this medium article with step-by-step explanation:
https://medium.com/mendix/how-to-add-font-icons-in-mendix-9-9307c2634392