PostCSS VMax

PostCSS VMax lets you use vmax units in Edge and Internet Explorer.

/* before */

.example {
	font-size: 1vmax;
}

/* after */

@media (orientation: landscape) {
	.example {
		font-size: 1vw;
	}
}

@media (orientation: portrait) {
	.example {
		font-size: 1vh;
	}
}

.example {
	font-size: 1vmax;
}

Usage

Add PostCSS VMax to your build tool:

npm install postcss-vmax --save-dev

Node

require('postcss-vmax').process(YOUR_CSS, { /* options */ });

PostCSS

Add PostCSS to your build tool:

npm install postcss --save-dev

Load PostCSS VMax as a PostCSS plugin:

postcss([
	require('postcss-vmax')({ /* options */ })
]).process(YOUR_CSS, /* options */);

Gulp

Add Gulp PostCSS to your build tool:

npm install gulp-postcss --save-dev

Enable PostCSS VMax within your Gulpfile:

var postcss = require('gulp-postcss');

gulp.task('css', function () {
	return gulp.src('./src/*.css').pipe(
		postcss([
			require('postcss-vmax')({ /* options */ })
		])
	).pipe(
		gulp.dest('.')
	);
});

Grunt

Add Grunt PostCSS to your build tool:

npm install grunt-postcss --save-dev

Enable PostCSS VMax within your Gruntfile:

grunt.loadNpmTasks('grunt-postcss');

grunt.initConfig({
	postcss: {
		options: {
			use: [
				require('postcss-vmax')({ /* options */ })
			]
		},
		dist: {
			src: '*.css'
		}
	}
});