ul#mainmenu {list-style-type:none; padding:0; margin:0; width:100em; height:1em; margin:0 auto;}
ul#mainmenu li {float:left; margin-right:0.2em;}
ul#mainmenu a {display:block; width:7em; height:1.5em; text-decoration:none; color:#000; border-bottom:0.5em solid #B5DA9C;}
ul#mainmenu a:hover {border-bottom:0.5em solid #c00;}
ul#mainmenu a:active, ul#mainmenuon a:focus {border-bottom:0.5em solid #B5DA9C; color:#B5DA9C;}