postcss-wrap-selector
PostCSS plugin for adding a parent selector to all rules in a css file.
Options
There are two interesting configs about this plugins. The selector option takes a string value that should be placed at the beginning of each selector, including selector lists separated by commas. The skipRootSelector option takes a string or an array, if a selector starts with specified root selector, this selector will be skipped.
{
"selector": ".parent",
"skipRootSelector": [".lightblue", ".black"]
}