* {
  margin: 0;
  padding:0;
}
body {
  width: 100%;
  font-family: "Arial", serif;
  text-align: center;
}
/* 解决移动端页面左右晃问题 */
html，body{
  overflow-x:hidden;
}
a{
  text-decoration: none;
}
.clearfix::after{
  content: "";
  display: block;
  height: 0;
  clear:both;
  visibility: hidden;
}
.clearfix{
  *zoom: 1;
}
.fl{
  float:left;
}
.fr{
  float:right;
}
li{
  list-style: none;
}