①winPhone的兼容：
@media all and (-ms-high-contrast: active),(-ms-high-contrast: none){}
②android4.0+ ios4+
@media all and (-webkit-transform-3d){}
html{font-size:62.5%;/* 10÷16=62.5% 相当于10px */}
body{font-size: 1.2rem;}
@media only screen and (min-480px){html{font-size:94%;}}
@media only screen and (min-560px){html{font-size:109%;}}
@media only screen and (min-640px){html{font-size:125%;}}
@media only screen and (min-720px){html{font-size:150%;}}
@media only screen and (min-800px){html{font-size:175%;}}
@media only screen and (min-880px){html{font-size:200%;}}
@media (device-320px){html{font-size: 60%;}}
@media (device-320px) and (min- 480px){html{font-size: 74%;}}
@media (device-473px){html{font-size:58%;/* 兼容winPhone 竖向 */}}
@media (device-320px) and (-webkit-min-device-pixel-ratio:2){html{font-size:56%;}/*兼容iphone4s、5 竖向*/}
@media (device-320px) and (-webkit-min-device-pixel-ratio:2) and (min- 480px){html{font-size:74%;}/*兼容iphone4s、5 横向*/}
@media (device-375px) and (-webkit-min-device-pixel-ratio:2){html{font-size:65.5%;/* 兼容iphone6 竖向 */}}
@media (device-375px) and (-webkit-min-device-pixel-ratio:2) and (min-667px){html{font-size:118%;/* 兼容iphone6 横向 */}}
@media (device-414px) and (-webkit-min-device-pixel-ratio:3){html{font-size:74%;/* 兼容iphone6 plus 竖向 */}}
@media (device-414px) and (-webkit-min-device-pixel-ratio:3) and (min-736px){html{font-size:128%;/* 兼容iphone6 plus 横向 */}}
@media (device-1080px) and (-webkit-min-device-pixel-ratio:3){html{font-size:66%;/* 兼容 三星Galaxy S4 横向 */}}