Awesome

PostCSS (fork of) For Plugin

PostCSS plugin that enables @for loop syntax in your CSS.

Install

npm install -g postcss-for-var

Usage

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

Note, that unlike the Sass @for, postcss-for in the example below iterates from 1 to 3 inclusively.

$from: 1;
$to: 3;
@for @i from $from to $to {
    .b-@i { width: calc(@i / $to * 100%); }
}

the above solution assumes you're using postcss-simple-vars and postcss-calc

.b-1 {
    width: 33.33333%
}
.b-2 {
    width: 66.66667%
}
.b-3 {
    width: 100%
}

This plugin must be set after postcss-nested and postcss-simple-vars but before postcss-calc.

By keyword is available:

@for @i from 1 to 5 by 2 {
    .b-@i { width: @ipx; }
}

.b-1 {
    width: 1px
}
.b-3 {
    width: 3px
}
.b-5 {
    width: 5px
}

See PostCSS docs for examples for your environment.