移动端布局 css 设置字体大小

@media (min-width:700px){html{font-size:27px;}}
@media (min-width:640px) and (max-width:700px){html{font-size:25px;}}
@media (min-width:630px) and (max-width:639px){html{font-size:23.66px;}}
@media (min-width:622px) and (max-width:630px){html{font-size:23.33px;}}
@media (min-width:613px) and (max-width:621px){html{font-size:23px;}}
@media (min-width:604px) and (max-width:612px){html{font-size:22.66px;}}
@media (min-width:595px) and (max-width:603px){html{font-size:22.33px;}}
@media (min-width:586px) and (max-width:594px){html{font-size:22px;}}
@media (min-width:577px) and (max-width:585px){html{font-size:21.66px;}}
@media (min-width:568px) and (max-width:576px){html{font-size:21.33px;}}
@media (min-width:558px) and (max-width:567px){html{font-size:21px;}}
@media (min-width:549px) and (max-width:558px){html{font-size:20.66px;}}
@media (min-width:540px) and (max-width:549px){html{font-size:20.33px;}}
@media (min-width:532px) and (max-width:540px){html{font-size:20px;}}
@media (min-width:523px) and (max-width:532px){html{font-size:19.66px;}}
@media (min-width:514px) and (max-width:523px){html{font-size:19.33px;}}
@media (min-width:505px) and (max-width:514px){html{font-size:19px;}}
@media (min-width:496px) and (max-width:505px){html{font-size:18.66px;}}
@media (min-width:487px) and (max-width:496px){html{font-size:18.33px;}}
@media (min-width:479px) and (max-width:487px){html{font-size:18px;}}
@media (min-width:470px) and (max-width:479px){html{font-size:17.66px;}}
@media (min-width:461px) and (max-width:470px){html{font-size:17.33px;}}
@media (min-width:452px) and (max-width:461px){html{font-size:17px;}}
@media (min-width:443px) and (max-width:452px){html{font-size:16.66px;}}
@media (min-width:434px) and (max-width:443px){html{font-size:16.33px;}}
@media (min-width:425px) and (max-width:434px){html{font-size:16.44px;}}
@media (min-width:416px) and (max-width:425px){html{font-size:15.66px;}}
@media (min-width:407px) and (max-width:416px){html{font-size:15.4px;}}
@media (min-width:399px) and (max-width:407px){html{font-size:15px;}}
@media (min-width:390px) and (max-width:399px){html{font-size:14.66px;}}
@media (min-width:381px) and (max-width:390px){html{font-size:14.33px;}}
@media (min-width:373px) and (max-width:381px){html{font-size:14px;}}
@media (min-width:364px) and (max-width:373px){html{font-size:13.66px;}}
@media (min-width:355px) and (max-width:364px){html{font-size:13.33px;}}
@media (min-width:346px) and (max-width:355px){html{font-size:13px;}}
@media (min-width:337px) and (max-width:346px){html{font-size:12.66px;}}
@media (min-width:328px) and (max-width:337px){html{font-size:12.44px;}}
@media (max-width:328px){html{font-size:11.88px;}}