html {
    font-size: 100px !important
}

body {
    font-size: 14px !important
}

@media screen and (min-width: 769px) {
    html {
        font-size: 100px !important
    }

    html #app {
        width: 480px;
        margin: 0 auto
    }
}

* {
    box-sizing: border-box
}