I'm having trouble with my CiviCRM CSS file not loading correctly -- the admin bar becomes a bulleted list of plain text.
I would guess it is likely an issue with domain name and/or HTTPS conflicts. In your
civicrm.settings.php file you define a
CIVICRM_UF_BASEURL which may or may not include the
https:// on the domain name. For example, it could be:
So my recommendation is to make sure that you forward the other 3 versions to the version you would like to use throughout the site. Then you may want to double check that the URLs set up in the CiviCRM Resource URLs page match (Administer > System Settings > Resource URLs).
it seems like my main problem was running the site in dev mode (no page cacheing).
I turned on page cache for anon users and also aggregate and compress .js and .css files (/admin/config/development/performance) and my overall site performance has increased dramatically and also seems to have resolved my .css errors.
One tool that helped me tremendously was using firebug to analyze page load times and errors.