Vendor prefixing in SASS

gistfile1.scss

@mixin vendor-prefix($name, $argument) {
  -webkit-#{$name}: $argument;
  -ms-#{$name}: $argument;
  -moz-#{$name}: $argument;
  -o-#{$name}: $argument;
  #{$name}: $argument;
}
		
@mixin border-radius($argument) {
  @include vendor-prefix(border-radius, $argument);
}	

@mixin box-shadow($argument) {
  @include vendor-prefix(box-shadow, $argument);
}