html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  min-height: 100%;
  font-size: 16px;
  font-family: "Microsoft Yahei", '宋体', arial;
  /* background-color: #f4fdee; */
}

.fl {
  float: left;
}
.fr {
  float: right;
}
.clearfix:after{
  display: block;
  content: "";
  clear: both
}
.warn{
  color: red;
}
.hide{
  display: none
}