How to edit css if "Combine and compress CSS files" is enabled?

Question

css

Hello! Enabled Drupal's "Combine and Compress CSS Files" feature to get rid of lines like " import url(" http://site.com/modules/system/system.menus.css?n1730u ");" in the html code, now the css styles are compressed into the file " http://site.com/sites/default/files/css/css_ghM0pa... " is it where you need to make changes now? It's just that if I reset the cache, all the changes will be lost on the idea?

Answer 1

make changes to the css files of your theme, then reset the cache.

Answer 2

It's just not convenient, it's not visible through firebug on which line the style is in the original file, it shows the line from the compressed file)