preons/src/lib/translate/examples/breakpoints-em.css

Functional css library and utility belt

.db {
    display: block;
}

@media screen and (min-width:30em) {
    .m:db {
        display: block;
    }
}

@media screen and (min-width:80em) {
    .l:db {
        display: block;
    }
}