Brandon here with the Webflow Customer Support Team!
I apologize for the delay in response as we have been experiencing higher than normal support inquiries.
Earlier this morning we were made aware of an issue with one of our upstream service providers, Fastly, as there was an interruption with their global CDN network. This network supplies your assets on a global scale.
At the time of this writing we have been made aware that there is a fix and is operational again. Your site(s) should be functioning as normal again. We will continue to monitor the situation on our end. In the meantime, if you would like to stay informed, please check out our Status Page for more details.
Please let me know if you have any other questions,
Have a Great Day and Happy Designing,
~ Brandon M.
Webflow Customer Technical Support Team