postcss-utilities/test/size.css

PostCSS plugin to add a collection of mixins, shortcuts, helpers and tools for your CSS

a {
    color: #fff;
    @util size(2em);
    float: left;
}

b {
    @util size(auto, 10em);
}

c {
    @util size(200px, 100px);
}

d {
    @util max-size(100px, 200px);
}

e {
    @util min-size(100px, 200px);
}