How to install sass?
step 1 : go to sass site : http://sass-lang.com/install
step 2 : according to your operating system type in your terminal the following command line :
1- if linux : `sudo gem install sass --no-user-install`
2- if windows : `gem install sass`
3- if mac : `sudo gem install sass`
step 3 : type `sass -v` to make sure sass is installed successfully
after type the command line in your terminal you man see this message : `gem is not recognized as an internal or external command` thats mean you need to install ruby , to do so do the following :
1- go to ruby installer website: https://rubyinstaller.org/downloads/
2- click on latest release or any version you want according you OS type 64x or 86x.
3- after download complete open to install and make sure to check `Add ruby executables to your path` and `Associate .rb and .rbw files with this ruby installation` during installation process.