如何使用两个CSS文件设置一个HTML文件的样式？

Question

I have to create two versions of a web app: one for landscape and one for portrait. But I need to run these both like we normally do in iPad; when in portrait mode, portrait version should work and if mode is landscape then the landscape version.

How can I make the site with one HTML file and two CSS files?

Answer 1

use the css3 media query

/* iPads (landscape) */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) {
/* Styles */
}

/* iPads (portrait) */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) {
/* Styles */
}

Answer 2

Look into responsive design. Twitter's Bootstrap project includes a series of responsive layouts, but the method is pretty basic: you define your CSS based on the current width of the device.

http://twitter.github.com/bootstrap/scaffolding.html#responsive

Here's an article explaining CSS3 and media queries: http://webdesignerwall.com/tutorials/responsive-design-with-css3-media-queries

Answer 3

Here are the css media queries for Standard Devices :-

/* Smartphones (portrait and landscape) ----------- */
@media only screen 
and (min-device-width : 320px) 
and (max-device-width : 480px) {
/* Styles */
}

/* Smartphones (landscape) ----------- */
@media only screen 
and (min-width : 321px) {
/* Styles */
}

/* Smartphones (portrait) ----------- */
@media only screen 
and (max-width : 320px) {
/* Styles */
}

/* iPads (portrait and landscape) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) {
/* Styles */
}

/* iPads (landscape) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) {
/* Styles */
}

/* iPads (portrait) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) {
/* Styles */
}

/* Desktops and laptops ----------- */
@media only screen 
and (min-width : 1224px) {
/* Styles */
}

/* Large screens ----------- */
@media only screen 
and (min-width : 1824px) {
/* Styles */
}

/* iPhone 4 ----------- */
@media
only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {
/* Styles */
}

Answer 4

This one will help you

http://ajaxian.com/archives/iphone-windowonorientationchange-code

It detects the orientation change of your browser and calls the java Script function . Inside the function you can load your css class as your preferance :)