/*媒体查询*/
html,body{
  font-size: 40px;
}
@media screen and (min-width: 319px) {
  html,
  body {
    font-size: 17px !important;;
  }
}
@media screen and (min-width: 359px) {
  html,body{
    font-size: 19px !important;;
  }

}
@media screen and (min-width: 374px) {
  html,
  body {
    font-size:20px !important;;
  }
}
@media screen and (min-width: 410px) {
  html,body{
    font-size: 22px !important;;
  }
}
@media screen and (min-width: 434px) {
  html,
  body {
    font-size: 24px !important;;
  }
}
@media screen and (min-width: 559px) {
  html,
  body {
    font-size: 30px !important;;
  }
}
@media screen and (min-width: 613px) {
  html,body{
    font-size: 33px !important;;
  }
}
@media screen and (min-width: 639px) {
  html,
  body {
    font-size: 35px !important;;
  }
}
@media screen and (min-width: 719px) {
  html,
  body {
    font-size: 39px !important;;
  }
}
@media screen and (min-width: 739px){
  html,body{
    font-size: 40px !important;;
  }
}