Usefull Mediaquery to target the mobile world

mediaQuery.css

/* Smartphones (portrait and landscape) */
@media only screen and (min-device-width : 320px) and (max-device-width : 480px) {}

/* Smartphones (landscape) */
@media only screen and (min-width : 321px) {}

/* Smartphones (portrait) */
@media only screen and (max-width : 320px) {}

/* iPads (portrait and landscape) */
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) {}

/* iPads (landscape) */
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape) {}

/* iPads (portrait) */
@media only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait) {}

/* Desktops and laptops */
@media only screen and (min-width : 1224px) {}

/* Large screens */
@media only screen and (min-width : 1824px) {}

/* iPhone 4 */
@media only screen and (-webkit-min-device-pixel-ratio : 1.5), only screen and (min-device-pixel-ratio : 1.5) {}