Go to http://rubyinstaller.org/ and download ruby.
In the installation when you go through “Installation Destination and Optional Tasks” step you should check the second and third option.
When the installation is finished you should open command prompt(cmd)
Then install first “gem install compass” second “gem install sass”.
Then go to your project folder like: “D:Projects\Content\styles” and create a file “config.rb” and write in the file.
After all the above is finished
in cmd navigate to that same path where you’ve put the config.rb and just type “compass watch”. it will listen for changes in the scss files