Makes your styles shorter. Retrieve your WordPress or BuddyPress theme's stylesheet to display a new one according of the browsered page.
I do not have permission to copy the stylesheet of my theme automatically, I must do it manually.
It's quite normal, there is none to begin with. There are hundreds of different themes online, and the plugin's directory can't have them all together. The stylesheet of the theme is reproduced at the time of installation, or an error occurred during activation.
Multiple errors can occur depending on the security implemented by the various hosts. So, it was not possible to test them all. The stylesheet must be copied manually as all occurrences of the $files array, for each type of page on my site, and set in the PHP Child Styles file. I did not need to have as many style sheets as provided for BuddyPress if I did not use this plugin. The first 6 are enough for a blog that only uses WordPress.
Styles Child does not yet support
custom post types, but it will be done in the next version, if there is a demand. Same problem for bbPress ... A temporary solution is to gather all the styles for the new
style.css files copied in the plugin.
After verifying that my theme displays correctly all page types using these files, I have to delete unused styles. It may be helpful to use GTmetrix (http://gtmetrix.com/) or PageSpeed (https://developers.google.com/speed/pagespeed/insights) to point all unused CSS lines, and to delete them one by one. I do then work my styles and make them more readable for browsers, and further improve the efficiency of my site.
It's quite normal, and it serves as a spare in case of non-standard page. It is best to leave it as it for safety.