html {
    font-size: 62.5% !important; /* 10÷16=62.5% */
}

@media only screen and (min-height: 768px) {
    html {
        font-size: 94% !important; /* 15.04÷16=94% */
    }
}

/*@media only screen and (min-width: 561px) {*/
/*html {*/
/*font-size: 109% !important; !* 17.44÷16=109% *!*/
/*}*/
/*}*/

@media only screen and (min-height: 1080px) {
    html {
        font-size: 125% !important; /* 20÷16=125% */
    }
}