media queries standard devices

gistfile1

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

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

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

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

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

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

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

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

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