We recently had a Font Awesome CDN user ask us if there was a way to fallback to CSS-only when using an embed code.
If you haven’t heard of or tried our free CDN product you can register with us and get a brand new embed code of your own to play with by going to https://cdn.fontawesome.com.
Check it out http://s.codepen.io/robmadole/debug/GNKELO
We can see here that a simple <noscript> block here does exactly what we need. This is an old trick but still a good one.