CSS in Design Studio 1.4

Hello everyone!

I recently started using Design Studio for a project and have been in love with alot of the features that come with it.

Here's my problem.

I quickly realized that css is the way to go for alot of the different elemnts in my design, however I have not been able to find how you make new custom css classes and implement. In older versions (Design Studio 1.1) I found tutorials that point towards a button called "open repository folder" from which you could acces a .css file however as of DS1.4 that button is not present and I'm lost as to how this works now.

I'm running Design Studio 1.4 towards a Universe located on a BO server.

Any help is much appreciated.

/Emil