@charset "utf-8";
/* CSS Document */
			* {
				margin: 0;
				padding: 0;
			}

			body {
				width: 1400px;
				margin: 0 auto;
				font-family: '黑体';

			}

			a {
				text-decoration: none;
				color: #000;
			}

			li {
				list-style: none;
			}

			img {
				display: block;
			}

			#nav {
				width: 1400px;
				background: #fff;
				height: 61px;
				position: fixed;
				left: 50%;
				margin-left: -700px;
				z-index:2;
				
			}

			#nav ul {
				height: 61px;
				background: url(images/logo.png) no-repeat 88px center;
			}

			#nav li {
				/* 注意后代选择器与子选择器的区别,子元素没有的部分可以继承父元素,部分可继承 */
				text-align: center;
				width: 130px;
				margin-right: 20px;
				float: right;
			}

			#nav li:nth-child(1) {
				margin-right: 60px;
			}

			#nav li a {
				display: inline-block;
				padding: 20px 0 13px;
				font-size: 20px;
			}

			#nav li a:hover {
				color: #679fff;
			}

			#nav a div {
				border-bottom: #fff solid 2px;
				width: 64px;
				margin: 5px auto 0;
			}

			#nav li:nth-child(5) div {
				width: 32px;
			}

			#nav li a:hover div {
				border-bottom-color: #679fff;
			}

			#navzhanwei {
				width: 1400px;
				height: 61px;
			}

			#footer {
				margin-top: 40px;
				width: 100%px;
				height: 140px;
				background: #679FFF;
			}

			#footer p {
				padding-top: 13px;
				text-align: center;
				font-size: 12px;
				color: #fff;
				line-height: 1;
			}
			#backToTop {
				position: fixed;
				right: 145px;
				bottom: 145px;
				width: 75px;
				height: 75px;
				z-index: 999;
				opacity: 0;
				visibility: hidden;
				overflow: hidden;
			}

			#backToTop.active {
				opacity: 1;
				visibility: visible;
			}

			.backtop-img {
				width: 100%;
				height: 100%;
				object-fit: cover;
			}