Screen Size

Mobile

only screen and (min-width: 480px)

Tablet

only screen and (min-width: 768px)

Desktop

only screen and (min-width: 992px)

Huge

only screen and (min-width: 1280px)
Or:

Phone

only screen and (max-width:320px)

Tablet

only screen and (min-width:321px) and (max-width:768px)

Desktop

only screen and (min-width:769px)