postcss-prefect

PostCSS Opacity

PostCSS plugin to add opacity filter for IE8.

/* Input example */
.foo {
  opacity: .5;
}

/* Output example */
.foo {
  opacity: .5;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
}

Usage

postcss([ require('postcss-opacity') ])

See PostCSS docs for examples for your environment.