@media only screen and (max-device-width:480px),
only screen and (-webkit-min-device-pixel-ratio: 2)
{ /*iphone css*/ }
max-device width 有意义，但像素比 对我来说没有任何意义。谢谢。
最佳答案
来自 http://developer.android.com/reference/android/webkit/WebView.html
The -webkit-device-pixel-ratio CSS media query. Use this to specify the screen densities for which this style sheet is to be used. The corresponding value should be either "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium density, or high density screens, respectively. For example: The hdpi.css stylesheet is only used for devices with a screen pixel ration of 1.5, which is the high density pixel ratio.
并根据https://developer.mozilla.org/en/CSS/Media_queries
-moz-device-pixel-ratio
Gives the number of device pixels per CSS pixel.
Note: This media feature is also implemented by Webkit as -webkit-device-pixel-ratio. The min and max prefixes as implemented by Gecko are named min--moz-device-pixel-ratio and max--moz-device-pixel-ratio; but the same prefixes as implemented by Webkit are named -webkit-min-device-pixel-ratio and -webkit-max-device-pixel-ratio.
关于iphone - 什么是 -webkit-min-device-pixel-ratio : 2 stand for?，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9437584/