body,
ul,
html {
  margin: 0;
  padding: 0;

  font-family: 'PingFang SC', 'Lantinghei SC', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', 微软雅黑, STHeitiSC-Light, simsun, 宋体, 'WenQuanYi Zen Hei', 'WenQuanYi Micro Hei', 'sans-serif';
  font-size: 16px;
}
li {
  list-style-type: none;
}