@media only all and (max-width: 639px){
    body {
        font-size: 0.9rem;
    }

    #qg-primary-content {
        font-size: 0.8rem;
    }

    #navDiv {
        position: fixed;
        top: -2000px;
    }

    .mobileHide {
        display: none;
    }

    .mobileShow {
        display: block;
    }   
}