opacity.sass

/ This SASS function makes it easy to get cross-browser opacity.
/
/ Firefox and Safari use CSS opacity.
/ Internet Explorer 7 and 8 each require their own flavor of the opacity alpha filter.
/
/ See http://www.quirksmode.org/css/opacity.html for more info on opacity.
/
/ Pass an opacity value between 0.0 and 1.0
=opacity(!value)
  :opacity= !value
  :-ms-filter "progid:DXImageTransform.Microsoft.Alpha(Opacity=#{!value*100})"
  :filter alpha(opacity=#{!value * 100})