Theme takes different css file from /default/files/css when uploaded to remote server from local I have zymphonies theme installed in my Drupal 8 website. In my localhost everything was working fine. But when I uploaded the entire files to the remote server the styling of breadcrumbs has gone (it shows as numbered list). As I inspected with the firebug the css file that is taken from default/files/css is different.

There are large number of css files in the default/files/css how does Drupal choose to select a particular css from that set of css files?
The location "default/files/css" is used to store aggregated CSS files, created by Drupal Core. CSS/JS file aggregation can be enabled/disabled by navigating to Drupal Performance settings page, using "Admin => Configure => Development => Performance" and enabling checkbox "Aggregate CSS files". You can also delete the .css files from "default/files/css" directory and Drupal will automatically create new one whenever site is visited first time after that. Check the screenshot below:



It is not advisable on production, but if you want to use original files from Theme's CSS directory directly, then uncheck "Aggregate CSS files" setting checkbox and Try clearing cache.