From http://blog.templatemonster.com/2014/10/14/css-media-queries-for-all-devices-and-browsers-including-ie7-and-ie8/?utm_campaign=TM+Newsletter+2014-10-14&utm_medium=email&utm_source=newsletter

css-mediaqueries.scss

/* # Breakpoints

Store and Share all possible breakpoints between projects or modules,
and use them with breakpoint-sass.

[Breakpoint-sass documentation](http://breakpoint-sass.com/)
[Breakpoint Wiki](https://github.com/at-import/breakpoint/wiki)

@state - Draft


Styleguide components.variables.breakpoints
*/

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

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

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

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

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

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

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

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

/* iPhone 5 (portrait & landscape)----------- */
@media only screen
and (min-device-width : 320px)
and (max-device-width : 568px) {
/* STYLES GO HERE */
}

/* iPhone 5 (landscape)----------- */
@media only screen
and (min-device-width : 320px)
and (max-device-width : 568px)
and (orientation : landscape) {
/* STYLES GO HERE */
}

/* iPhone 5 (portrait)----------- */
@media only screen
and (min-device-width : 320px)
and (max-device-width : 568px)
and (orientation : portrait) {
/* STYLES GO HERE */
}