After importing the demo data, all assets (css, images, etc.) are not loading. See example
This issue happens if you export demo data including System settings, which will include our Static Assets Url setup and all static assets will be served from our server.
To fix this, either export the demo data again by leaving the System OFF, as instructed in our demo import guide, or go to Journal > System > Settings > Your Store > Performance > Static Assets Url and turn it OFF.