CSS

css media queries between two sizes

/* No greater than 900px, no less than 400px */
@media (max-width:900px) and (min-width:400px) {
    .foo {
        display:none;
    }
}

css media query between two width

/* No greater than 768px, no less than 400px */
@media (max-width:768px) and (min-width:400px) {
    .class {
        font-size: 15px;
    }
}