#nav ul{margin:0;padding:0;width:80%;display:block;list-style:none;}
#nav li{width:80%;display:block;}
.js #nav{clip:rect(0 0 0 0);max-height:0;position:absolute;display:block;overflow:hidden;zoom:1;}
#nav.opened{max-height:9999px;margin-bottom:40px;}
@media screen and (min-width:48em){.js #nav{position:relative;}
.js #nav.closed{max-height:none;}
#nav-toggle{display:none;}
}