body {
  padding: 0;
  margin: 0;
  font-family:
    "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  font-size: 14px;
  line-height: 1.42857143;
  color: #333;
  background-color: #fff;
  border: 1px red solid;
}