css - Is it possible to nest media queries within media queries?

Question

Is this possible? It seems like a neat solution to me, but I'm not sure if it will work.

@media only screen 
and (min-device-width : 320px) 
and (max-device-width : 480px) {

    /* Code for both portrait and landscape */

    @media (orientation:portrait) {

        /* Code for just portrait */

    }

    @media (orientation:landscape) {

        /* Code for just landscape */

    }

}

Answer 1

You should be able to nest @media rules this way in CSS3, but it isn't yet supported by most browsers. See this answer for details.

You would have to fully expand and repeat the top-level media queries for the inner rules for it to work across browsers (and I imagine the SCSS processor would generate something similar):

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

@media only screen 
and (min-device-width: 320px) 
and (max-device-width: 480px) 
and (orientation: portrait) {

    /* Code for just portrait */

}

@media only screen 
and (min-device-width: 320px) 
and (max-device-width: 480px) 
and (orientation: landscape) {

    /* Code for just landscape */

}