html, body {
  width: 100%;
  height: 100%;
  padding: 0px;
  margin: 0px;
  font-size: 14px;
  display: flex;
  justify-content: center;
  background-color: #fff;
  font-family:'Roboto', 'San Francisco', 'Helvetica Neue', Helvetica, Arial, 'PingFangSC-Light', 'Hiragina Sans GB', 'WenQuanYi Micro Hei', 'microsoft yahei ui', 'microsoft yahei', sans-serif;
}
#root {
  display: flex;
  width: 100%;
  height: 100%;
}
* {
  box-sizing: border-box;
}