ul#main-nav {margin:0;padding:0;float:left;border-bottom:0.1em solid gray;width:100%;}
ul#main-nav li {margin:0;padding:0;list-style:none;float:left;margin:0 0.3em 0 0;}
ul#main-nav li a {text-decoration:none;display:block;padding:0.3em;border-top:0.4em solid white;color:black;background:#cfcfcf;}
ul#main-nav li a:hover {border-top:0.4em solid teal;color:teal;}