@media screen and (min-width: 5760px) {
  body {
    zoom: 4;
  }

  .top-bg img {
    height: 100px;
  }
}

@media screen and (min-width: 5000px) and (max-width: 5759px) {
  body {
    zoom: 3;
  }

  .top-bg img {
    height: 100px;
  }

  .feedback-box,
  .feedback-qq {
    zoom: 0.5;
  }
}

@media screen and (min-width: 3840px) and (max-width: 4999px) {
  body {
    zoom: 2.5;
  }

  .top-bg img {
    height: 100px;
  }
}

@media screen and (min-width: 1921px) and (max-width: 3839px) {
  body {
    /* zoom: 2; */
    zoom: 1;
  }

  .top-bg img {
    height: 100px;
  }
}

@media screen and (min-width: 1280px) and (max-width: 1920px) {
  body {
    zoom: 1;
  }
}

@media screen and (max-width: 1279px) {
  body {
    zoom: 0.9;
  }
}