在index.html中
<style>
@media all and (min-width: 0px) {
html{font-size: 20px;}/* 12*4.6 */
}
@media all and (min-width: 640px) {
html{font-size: 50px;}/* 14*4.6 */
}
@media all and (min-width: 768px) {
html{font-size: 53px;}/* 16*4.2 */
}
@media all and (min-width: 800px) {
html{font-size: 53px;}/* 16*4.2 */
}
@media all and (min-width: 1024px) {
html{font-size: 65px;}/* 18 *4.6*/
}
@media all and (min-width: 1100px) {
html{font-size: 65px;}/* 20 *4.6 */
}
@media all and (min-width: 1280px) {
html{font-size: 82px;}/* 22 *3.03*/
}
@media all and (min-width: 1366px) {
html{font-size: 83px;}/* 24 */
}
@media all and (min-width: 1440px) {
html{font-size: 83px;}/* 25 */
}
@media all and (min-width: 1680px) {
html{font-size: 87px;/* 28 */
}
@media all and (min-width: 1920px) {
html{font-size:100px;}/* 33 */
}
</style>