*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}
li{
  list-style-type: none;
}
a{
  text-decoration:none;
  color:#000;
  display:inline-block;
}
.clearfix:after{
  content:"";
  display:block;
  clear:both;
  height:0;
}