When designing an Andriod or an iOS app, it is clear that you should follow their respective Human Interface Guidelines (HIGs). But what do you do when designing a Html5 app? What cross platform mobile HIGs are there?
What HIG (official or custom) would you recommend for cross platform html5 apps?
Edit: to clarify, I'm using the term 'html5 apps' to refer to an app that relies on html, css, and javascript.