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

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

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

@for $i from 1 to 3 {
    .b-$i { width: $(i)px; }
}

.b-1 {
    width: 1px
}
.b-2 {
    width: 2px
}
.b-3 {
    width: 3px
}

This plugin must be set before postcss-nested and postcss-simple-vars. Therefore dollar variable cannot be used as a loop range parameter.

By keyword is available:

@for $i from 1 to 5 by 2 {
    .b-$i { width: $(i)px; }
}

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

See PostCSS docs for examples for your environment.