html {
	font-size: 125% /*20 ÷ 16 × 100% = 125% * 2, 62.5 ÷ 125 ÷ 10 = 0.05 */ ! important;
	-webkit-text-size-adjust:none;
} 

@media only screen and (min-width: 330px) and (-webkit-min-device-pixel-ratio: 3) {
/*1080 Portrait*/ 
	html {
        font-size: 112.5%  /*18 ÷ 16 × 100% = 112.5% *2 , */ ! important;  
		-webkit-text-size-adjust:none;
    }
}

@media only screen and (max-width: 400px) and (-webkit-max-device-pixel-ratio: 1.5) {
/*480 Portrait*/ 
	html {
        font-size: 87.5% !important;
		-webkit-text-size-adjust:none;
    }
}