@NerdBrick if you care about compression and performance a better solution would be to process the files at build time on your development machine, and only upload the final css files to the website.
That can be done using Grunt or Gulp which VS 2015 has native support for, while VS 2013 users can install this extension for Grunt and Gulp support https://visualstudiogallery.msdn.microsoft.com/8e1b4368-4afb-467a-bc13-9650572db708
Here is an article describing 5 different plugins for Grunt which will definitely squeeze any excess byte away from your files
http://www.sitepoint.com/5-grunt-tasks-improve-performance-website/
That can be done using Grunt or Gulp which VS 2015 has native support for, while VS 2013 users can install this extension for Grunt and Gulp support https://visualstudiogallery.msdn.microsoft.com/8e1b4368-4afb-467a-bc13-9650572db708
Here is an article describing 5 different plugins for Grunt which will definitely squeeze any excess byte away from your files
http://www.sitepoint.com/5-grunt-tasks-improve-performance-website/