通过媒体查询分别定位iPhone 4和5 [英] Targetting iPhone 4 and 5 separately with media queries

问题描述

我有这些媒体查询，可以为iPhone 4和iPhone 5应用不同的样式

I have these media queries to apply different styles for iPhone 4 and iPhone 5

/* iPhone 4 (landscape) */
@media only screen and (min-width:320px) and (max-width:480px) and (orientation:landscape) { 
    .background img {
      height: 5px;
    }
}
/* iPhone 4 (portrait) */
@media only screen and (min-width:320px) and (max-width:480px) and (orientation:portrait) { 
    .background img {
      height: 10px;
    }
}
/* iPhone 5 (landscape) */
@media only screen and (min-width:320px) and (max-width:568px) and (orientation:landscape) { 
    .background img { 
      height: 245px;
    }
    .logo img {
        height: 205px;
        width: 205px;
    }
}
/* iPhone 5 (portrait) */
@media only screen and (min-width:320px) and (max-width:568px) and (orientation:portrait) { 
    .background img {
      height: 210px;
    }
    .logo img {
        height: 170px;
        width: 170px;
    }
    .top-content h2 {
        font-size: 1.8em;
        line-height: 120%;
        margin-bottom: 20px;
    }
    .main-container {
        margin-top: 30px;
        margin-left: 15px;
        margin-right: 15px;
    }
}

问题在于，在iPhone 5上，iPhone 4的样式也被应用了.我该如何预防?

The problem is that on iPhone 5, the styles for iPhone 4 are applied too. How can I prevent this?

推荐答案

另一个有用的媒体功能是device-aspect-ratio.

Another useful media feature is device-aspect-ratio.

请注意，iPhone 5没有16:9的宽高比.实际上是40:71.

Note that the iPhone 5 does not have a 16:9 aspect ratio. It is in fact 40:71.

iPhone < 5:
@media screen and (device-aspect-ratio: 2/3) {}

iPhone 5:
@media screen and (device-aspect-ratio: 40/71) {}

iPad:
@media screen and (device-aspect-ratio: 3/4) {}

参考: @ W3C上的媒体查询

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