Marvel modal with Whitney
Giving Whitney a spin for Marvel, really like how the font looks at small sizes and seems to be used by a lot of sites I love.
This is also a bit of a redesign of the current download modal where you can download your prototype to your own computer to tweak or run off your own server. Part of the new Pro account.
Marvel is a free mobile and web prototyping service for designers, unlimited projects, easy to use and runs off Dropbox. Give it a go