Merge CSS rules with PostCSS.
With npm do:
npm install postcss-merge-rules --save
This module will attempt to merge adjacent CSS rules:
a {
    color: blue;
    font-weight: bold
}
p {
    color: blue;
    font-weight: bold
}
a,p {
    color: blue;
    font-weight: bold
}
a {
    color: blue
}
a {
    font-weight: bold
}
a {
    color: blue;
    font-weight: bold
}
a {
    font-weight: bold
}
p {
    color: blue;
    font-weight: bold
}
a,p {
    font-weight: bold
}
p {
    color: blue
}
See the PostCSS documentation for examples for your environment.
See CONTRIBUTORS.md.
MIT © Ben Briggs