<link rel="stylesheet" href="my-style.css" media="screen">
<link rel="stylesheet" href="mobile.css" media="handheld">
I used the above links to link the css stylesheet with the index page.

the format used below to write the stylesheet for mobile. when i previewed on my phone, some mobile devices responded to it while others loaded that of screen. is my format wrong pls tell me. I'm trying to get the mobile view of my site.(still on my PC).
@media only screen (max-device-width:480px) {
body {
width:n%;
background-color:#x;
}
}