@charset "utf-8";
#main{min-height:80vh;}

 @media screen and (max-width: 750px) {
#main ul{width:100%; margin:auto; padding:0;}
#main ul li a{font-weight:bold;}
#main ul ul{width:95%; margin-right:0;}
#main ul ul li a{font-weight:normal; color:#ff6a00;}
}