* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html{
  height: 100%;
}
body {
  margin: 0;
  padding: 0;
  font-size: 14px;
  font-family: 'PingFang-SC-Regular','PingFang SC','Microsoft Yahei','SimSun', 'Songti SC','Arial';
  height: 100%;
  background: #F0F2F5;
}
#app{
  height: 100%;
}
li{
  list-style: none;
}
svg{
  width: 20px;
  height: 20px;
}