@media only screen and (min-device-width :320px) and (max-device-width :480px){}@media only screen and (min-width :321px){}@media only screen and (max-width :320px){}@media only screen and (min-device-width :768px) and (max-device-width :1024px){}@media only screen and (min-device-width :768px) and (max-device-width :1024px) and (orientation :landscape){}@media only screen and (min-device-width :768px) and (max-device-width :1024px) and (orientation :portrait){}@media only screen and (min-device-width :768px) and (max-device-width :1024px) and (orientation :landscape) and (-webkit-min-device-pixel-ratio :2){}