404 errors for loading CSS on Event pages (Wordpress)
It looks like you have WP installed in it's own directory as per https://codex.wordpress.org/Giving_WordPress_Its_Own_Directory

The short answer is that this is not (yet) supported by CiviCRM.  We've been documenting it here:

https://wiki.civicrm.org/confluence/display/CRM/WordPress+installed+in+its+own+directory+issues

The issue is tracked here : https://issues.civicrm.org/jira/browse/CRM-16421

For now I would move WP out of it's own directory, it may not be your optimum configuration, but it will work.