Integrating Sass CSS Preprocessor into Kentico

Have you checked documentation on this one?

Yeah, I've looked at that. Was looking at something more specific about Sass.

You can use something like Grunt or Gulp to do that work for you in your own environment without the need to have these custom integrations within Kentico. The only reason to have it in Kentico would be to make edits directly in Kentico. I'd stay away from that, honestly and simply use your front end devs work in their own tools, then set that up to copy the code into a Kentico directory like

/<sitename>/assets/css
/<sitename>/assets/js
/<sitename>/assets/img

Thanks for the info Brenden.

We're currently just working with the portal version of Kentico. If we got access to the server would that way still work if people were still also using the portal side of kentico?

Using the way I suggest, would require a developer to make change(s) in the physical css file and push it to the Kentico file system.

Are your clients/people editing the CSS educated in SASS and making changes?

What we do for things like this are create a SASS file for the base site layout/setup/design, then create a file within the Kentico CSS Stylesheet app as an override to the base stylesheet. This will help you make modifications or overrides to base styles without the need to implement custom code for SASS preprocessors.