my case for stylus (compile to css)

case4stylus

body {
  border-radius: 5px; //this auto expands to include -webkit- and -moz- border radii
  //as you see, comments are more natural.
  opacity: 0.5; //this auto-expands to include the IE filter, whatever it is.
}

//use a variable:
$color = gray;

/*
  stylus import on compile
  When using @import without the .css extension, it is assumed to be a Stylus sheet, for example @import "fancyDivs"
*/

@import 'moreCode' //file is modeCode.styl