A simple way for DRYier, faster and cleaner Modernizr tests in Sass.

Requires Sass 3.3

There are 3 ways of installing the Modernizr mixin:

Download _modernizr.scss which is located in the stylesheets folder and place it in your Sass directory.

To install the package using Bower simply run the following command:

bower install --save-dev modernizr-mixin

The Modernizr mixin is also available as a Compass extension:

gem install modernizr-mixin

Then add the following line to your config.rb:

require 'modernizr-mixin'

Import it into your main stylesheet:

@import 'modernizr';

The Modernizr helper includes two mixins: yep and nope. Simply pass a comma-separeted list (argList) of features as argument and the rules you need to print.

Prints classes for supported features.

@include yep($features...) { ... }

Prints classes for unsupported features and unavailable Javascript.

@include nope($features...) { ... }

Sass input:

.my-selector {
	@include yep(translate3d, opacity) {
		transform: translate3d(0, 100px, 0);
		opacity: 0;
	}
	@include nope(translate3d, opacity) {
		top: 100px;
		display: none;
	}
}

CSS output:

.translate3d.opacity .my-selector {
	transform: translate3d(0, 100px, 0);
	opacity: 0;
}

.no-js my-selector,
.no-translate3d .selector,
.no-opacity .selector {
	top: 100px;
	display: none;
}

Thanks to Hugo Giraudel for reviewing and tweaking the original code.