*{
  margin:0;
  padding:0;
}
ul,li{
  list-style: none;
}
body{
  width:100%;
  height:100%;
  font-size:16px;
  font-family:  "Arial","Microsoft YaHei","黑体","宋体",sans-serif;
}
a{
  text-decoration: none;
}
.fl{
  float:left;
}
.fr{
  float:right;
}
.clearfix:after{
  content:'';
  display: table;
  clear:both;
}
.clearfix{
  zoom:1;
}