What is the REGEX of a CSS selector

Question

I\'d like to parce a CSS file and add before every CSS selector another selector.

From:

p{margin:0 0 10px;}
.lead{margin-bottom:20px;font-size:21px;font-         


        

Answer 1

A simple and readable regex is below:

[\#\.\w\-\,\s\n\r\t:]+(?=\s*\{)

you can test it on css code in this tool`