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postcss-minify-params

Minify at-rule params with PostCSS.

@media only screen   and ( min-width: 400px, min-height: 500px ) {
    h2{
        color:blue
    }
}

@media only screen and (min-width:400px,min-height:500px) {
    h2{
        color:blue
    }
}

Usage

postcss([ require('postcss-minify-params') ])

See PostCSS docs for examples for your environment.