ul{
	width: 82%;
	margin: 0 auto;
	padding: 0;
	text-align:center; /*置中*/
}

ul li{
	display:inline-block;
	width:18%;
	text-align:center; /*置中*/
	border-top:5px solid rgba(87,44,0,0.5);
	border-bottom:5px solid rgba(87,44,0,0.5);
	margin-right:2px;
	background-color :rgba(87,44,0,0.5);
	
}

ul li a{
	/*display: block;*/
	color: white;
	text-decoration: none; /*底線*/
	display: block;
	height: 50px;
	text-align:center;
	
}

ul li:hover{

	background-color: rgb(255,147,147);
	border-top: 5px solid white;
	border-left: 0px solid white;
	border-bottom: 5px solid white;
	border-right: 0px solid darkblue;
	
}	
ul li a:hover{
	color:black;
	font-weight:bold;
}