移动端媒体查询设置字体大小适配不同机型（rem）

@media screen and (min-width: 320px) {
  html {
    font-size: 8.5333px !important;
  }
}


@media screen and (min-width: 360px) {
  html {
    font-size: 9.6px !important;
  }
}



@media screen and (min-width: 375px) {
  html {
    font-size: 10px !important;
  }
}



@media screen and (min-width: 384px) {
  html {
    font-size: 10.24px !important;
  }
}



@media screen and (min-width: 411px) {
  html {
    font-size: 10.96px !important;
  }
}



@media screen and (min-width: 414px) {
  html {
    font-size: 11.04px !important;
  }
}



@media screen and (min-width: 448px) {
  html {
    font-size: 11.9467px !important;
  }
}



@media screen and (min-width: 480px) {
  html {
    font-size: 12.8px !important;
  }
}



@media screen and (min-width: 512px) {
  html {
    font-size: 13.6533px !important;
  }
}



@media screen and (min-width: 544px) {
  html {
    font-size: 14.5067px !important;
  }
}



@media screen and (min-width: 576px) {
  html {
    font-size: 15.36px !important;
  }
}



@media screen and (min-width: 608px) {
  html {
    font-size: 16.2133px !important;
  }
}



@media screen and (min-width: 640px) {
  html {
    font-size: 17.0667px !important;
  }
}



@media screen and (min-width: 750px) {
  html {
    font-size: 20px !important;
  }
}



@media screen and (min-width: 768px) {
  html {
    font-size: 20.48px !important;
  }
}



@media screen and (min-width: 800px) {
  html {
    font-size: 21.3333px !important;
  }
}



@media screen and (min-width: 1024px) {
  html {
    font-size: 27.3067px !important;
  }
}

 一般的设计稿宽度为375px或者750px；当设计稿为375时，此时的1rem = 10px；当设计稿为750时，此时的1rem = 20px；然后对照着设计稿上的尺寸开发就可以了