postcss-units

PostCSS plugin which generates rem or em when required

Usage

Conversion from pixels into em or rem, depending on wrapper of value.

// input
.title {
    margin: rem(-10px 8px);
    padding: 15px;
    font-size: rem(14px);
    line-height: rem(20);
}
 
// output
.title {
    margin: -0.625rem 0.5rem;
    padding: 15px;
    font-size: 0.88rem;
    line-height: 1.25rem;
}

postcss([
    require('postcss-units')({
        size: 14,
        fallback: false,
        precision: 2
    })
])

options

size

Type: Number
Default: 16

The body font size.

fallback

Type: Boolean
Default: false

Perform fallback rem for old browsers.

precision

Type: Number
Default: 3

Quantity of digits after decimal point for em and rem.

Use with gulp-postcss

var gulp = require('gulp');
var postcss = require('gulp-postcss');
var postcssUnits = require('postcss-units');
 
gulp.task('css', function () {
 
    var processors = [
        postcssUnits({
            size: 14
        })
    ];
    return gulp.src(['build/static/css/**/*.css'])
        .pipe(postcss(processors))
        .pipe(gulp.dest('build/static/css'));
});

License

MIT © Maxim Gladkih