/* 兼容iphone5 */
@media (device-height:568px) and (-webkit-min-device-pixel-ratio:2){}
@media only screen and (max-device-width :480px){ }
@media only screen and (min-device-width :481px){ }
/*6*/
@media (min-device-width : 375px) and (max-device-width : 667px) and (-webkit-min-device-pixel-ratio : 2){ }
/*6+*/
@media (min-device-width : 414px) and (max-device-width : 736px) and (-webkit-min-device-pixel-ratio : 3){ }
/*魅族*/
@media only screen and (min-device-width :1080px) and (-webkit-min-device-pixel-ratio : 2.5){ }
/*mate7*/
@media only screen and (min-device-width :1080px) and (-webkit-min-device-pixel-ratio : 3){ }
/*4 4s*/
@media only screen and (device-height :480px) and (-webkit-device-pixel-ratio:2){ }
@media screen and (min-width: 320px) and (max-width: 480px) { }
/* 平板之类的宽度 1024 以下设备 */
@media only screen and (min-width: 321px) and (max-width: 1024px) {
}
/* PC客户端或大屏幕设备: 1028px 至更大 */
@media only screen and (min-width: 1029px) {
}
/* 竖屏 */
@media screen and (orientation:portrait) and (max-width: 720px) {对应样式}
/* 横屏 */
@media screen and (orientation:landscape){对应样式}
iPhone5s 504*320
