How I can make my HTML5 mobile web app suitable in different devices?

I have created one HTML5 mobile web app and tested in different devices like iphone,ipad,android phones and tablets.How I can optimize the size and开发者_运维知识库 resolution for this app in all these different devices?

You could use CSS media queries to optimize your web app for different screen sizes rather than optimizing it for different devices.

Responsive Web Design is what you want. The Responsive Web Design article on MDN is good introduction and includes links to many other helpful articles.