* {
				padding: 0;
				margin: 0;
			}

			#logo {
				float: left;
				height: 40px;
				margin-right: 100px;
				margin-left: 0px;
				margin-top:5px;
			}

			#top {
				width: 100%;
				height: 50px;
				background-color: #A27C58;
			}
			
			#top_center {
				width: 1000px;
				margin: 0 auto;
			}
			
			#nav {
				float: right;
			}
			
			#nav li {
				list-style: none;
				float: left;
				position: relative;
			}
			
			#nav a {
				text-decoration: none;
				padding: 0 20px;
				line-height: 50px;
				display: inline-block;
				text-align: center;
				font-weight: bolder;
				color: #fff;
			}
			
			#nav a:hover {
				background: #573A1E;
				text-decoration: none;
			}
			
			#nav ul li {
				border: 1px solid #000;
				background: #A27C58;
				float: left;
			}
			
			#nav ul a {
				color: #fff;
				display: block;
			}
			
			#nav ul {
				position: absolute;
				z-index: 2;
				display: none;
			}
			
			#nav li:hover ul {
				width: 140px;
				display: block;
			}
			

			body {
				background-color: #E5D1B6;
				font-family: "微软雅黑", sans-serif;
			}


			

			#footer {
				width: 100%;
				height: 50px;
				background-color: #000;
				color: #fff;
				text-align: center;
				padding: 15px 0;
				font-size: 12px;
				margin-top:30px;
			}

			#footer p {
				text-align: center;
				font-size: 14px;
				line-height: 24px;
				color: #fff;
			}

			#footer a {
				text-decoration: none;
				color: #fff;
				background: url(../images/record.png) no-repeat left center;
				padding-left: 30px;
			}

			#footer a:hover {
				color: #999;
			}

			.back {
				position: fixed;
				right: 40px;
				bottom: 80px;
				z-index: 9;
				display: none;
				cursor: pointer;
			}

			.clear {
				clear: both;
			}