his-answer/src/assets/css/base.scss

@import '@/common/scss/base.scss';
* {
  box-sizing: border-box;
}

html,
body,
input,
textarea,
select,
button {
  // font-family: 'Avenir', Helvetica, Arial, sans-serif;
  font-family: 'PingFangSC', 'PingFangSC-Regular';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #333;
}

html,
body {
  margin: 0 auto;
  background: $color-f;
  max-width: 750px;
  height: 100%;
  overflow: hidden;
  color: $color-1;
}

.scroll-view {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

@media screen and (max-width: 750px) {
  html {
    font-size: 14px;
  }
}
@media screen and (min-width: 750px) {
  html {
    font-size: 16px;
  }
  body {
    border-left: 1px solid $color-6;
    border-right: 1px solid $color-6;
  }
}