Fix indentation and wordwrap in CSS files

[cri]

Some CSS files (e.g. /wp-admin/css/login.css) lack proper wordwrap and indentation, and are really difficult to edit or patch for customisation.

Tidying with ​http://csstidy.sourceforge.net or similar tools would help.

[duck_]

That's the whole point, they're minified to make a smaller download size when the browser requests them (same for JS files). Look at the .dev.css version if you want unminified, edit that and then reminify... however you shouldn't be modifying the CSS files for customisation anyway, you should just be able to use a hook to inject your own styles to override.