屏幕适配之c3媒体查询代码块(20/1为1rem)

@media only screen and (width: 320px) {
html {
font-size: 16px;
}
}
@media only screen and (width: 360px) {
html {
font-size: 18px;
}
}
@media only screen and (width: 375px) {
html {
font-size: 18.75px;
}
}
@media only screen and (width: 400px) {
html {
font-size: 20px;
}
}
@media only screen and (width: 411px) {
html {
font-size: 20.55px;
}
}
@media only screen and (width: 414px) {
html {
font-size: 20.7px;
}
}
@media only screen and (min-width: 640px) {
html {
font-size: 32px;
}
}