* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  html,
  body {
    width: 100%;
    height: 100%;
  }
  
  @font-face {
    font-family: OPPOSans;
    src: url(./OPPOSans-R.ttf);
  }
  @font-face {
    font-family: PingFangRegular;
    src: url(./PingFangRegular.ttf);
  }
  