I have 3 open intervals of screen width now. They are (0,600], (600,800) and [800,1000] and each has a diffferent css style. For example:
@media screen and (max-width: 600px) {
background: #000
}
@media screen and (min-width: 800px) and (max-width: 1000px){
background: #eee
}
But how should I express (600,800) with ccs media query ?