/* CSS Document */
/* 标签边距清空 */
			* {
				margin: 0;
				padding: 0;
			}

			body {
				font-family: 微软细黑, Tahoma, sans-serif;
			}

			

			#top {
				width: 100%;
				height: 70px;
				background: #F0FBF1;
			}

			#top_center {
				width: 992px;
				margin: 0 auto;
			}

			#logo {
				float: left;
				margin-right: 80px;
				height: 70px;
			}

			#nav {
				width: 760px;
				margin: 0 auto;
				float: left;
				position: relative;
			}

			#nav ul {
				position: absolute;
				z-index: 2;
				display: block;
				height: 0;
				opacity: 0;
				overflow: hidden;
				transition: height 0.35s ease, opacity 0.35s ease;
			}

			#nav li {
				list-style: none;
				float: left;
				margin-right: 120px;
			}

			#nav li:nth-child(4) {
				margin-right: 0;
			}

			#nav a {
				text-decoration: none;
				color: #000;
				width: 100px;
				line-height: 70px;
				display: inline-block;
				text-align: center;
				font-weight: bolder;
			}

			#nav a:hover {
				background: #3D958F;
				color: #FFF;
				cursor: pointer;
			}

			#nav ul li {
				float: none;
				margin-top: 1px;
				margin-right: 0px;
				background: #CEEFD6;
			}

			#nav ul a {
				display: block;
			}

			#nav li:hover ul {
				height: auto;
				opacity: 1;
			}
			.back {
				position: fixed;
				width: 100px;
				height: 50px;
				line-height: 50px;
				text-align: center;
				background-color: #3D958F;
				right: 30px;
				bottom: 100px;
				border-radius: 10px;
				display: none;
				cursor: pointer;
				z-index: 99;
			}

			.back:hover {
				background: #CEEFD6;
			}
			

			#footer {
				width: 100%;
				background: #CEEFD6;
				height: 195px;
			}

			#footer_box {
				width: 914px;
				margin: 0 auto;
			}

			#p_bg {
				display: inline-block;
				width: 914px;
				height: 100px;
				background: #F0FBF1;
				margin: 30px auto;
				padding-top: 35px;
			}

			#footer p {
				color: #000;
				text-align: center;
				font-size: 14px;
				line-height: 30px;
				font-weight: bolder;
			}
				

			.clear {
				clear: both;
			}