/*适配苹果X*/@media only screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3) { .header_nav { top: 44px; }}/*适配苹果X smart Max*/@media only screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3) { .header_nav { top: 44px; }}/*适配苹果XR */@media only screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 2) { .header_nav { top: 44px; }}@media only screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2) { .header_nav { top: 44px; }}/*适配，6，7，8*/@media only screen and (device-width: 375px) and (device-height: 667px) and (-webkit-device-pixel-ratio: 2) { }/*适配，6+，7+，8+*/@media only screen and (device-width: 414px) and (device-height: 736px) and (-webkit-device-pixel-ratio: 3) { }/*适配，5*/@media only screen and (device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2) { }/*适配，4*/@media only screen and (device-width: 320px) and (device-height: 480px) and (-webkit-device-pixel-ratio: 2) { }