body {
    transition: margin 0.6s;
}

/* Big screens */
@media only all and (min-width: 49em) {
    body {
        margin: 2em;
    }
}

/* Small screens */
@media only all and (max-width: 49em) {
    body {
        margin: 2em 1.1em;
    }

    div#resizer_overlay {
        display: none !important;
    }
}