html {
            font-size: 625%;
            scroll-behavior: smooth
        }

        body {
            font-family: "微软雅黑";
        }

        table {
            margin: auto;
        }

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

        a:hover {
            color: #166cc4;
            text-decoration: none;
        }

        .top {
            height: 80px;
            background: #0a34bd;
        }

        .top::after {
            content: '';
            display: block;
            clear: both;
        }

        .top-logo {
            float: left;
            padding-left: 30px;
            padding-top: 20px;
			height:60px;
        }

        .top-logo img {
            margin-right: 30px;
        }

        .nav {
            height: 60px;
            font-size: 16px;
            line-height: 60px;
            z-index: 9;
            position: relative;
        }

        .nav a:hover {
            text-decoration: none;
        }

        .nav-wrapper {
            width: 1400px;
            margin: 0 auto;
            height: 60px;
        }

        .nav-wrapper::after {
            content: '';
            display: block;
            clear: both;
        }

        .nav-item {
            width: 160px;
            float: left;
            text-align: center;
        }

        .nav-item>a {
            display: inline-block;
            width: 160px;
            height: 60px;
        }

        .nav-item:hover {
            background: #2677dd;
            opacity: 0.9;
        }

        .nav-item:hover .nav-item-sub {
            display: block;
        }

        .nav-item:hover a {
            color: #fff;
        }

        .nav-item-sub {
            position: absolute;
            top: 60px;
            left: 0;
            display: none;
            width: 100%;
            height: 60px;
            background: #2677dd;
            opacity: 0.9;
        }

        .nav-item-sub ul {
            width: 1355px;
            margin: 0 auto;
            padding-left: 45px;
            overflow: hidden;
            background: url(../assets/bg_4.png) left center no-repeat;
        }

        .nav-item-sub li {
            float: left;
            margin-right: 35px;
        }

        .ban {
            width: 100%;
            background: url(images/m1.jpg) top center no-repeat;
            height: 197px;
        }

        .ban1 {
            width: 1280px;
            margin: auto;
            font-size: 34px;
            font-weight: bold;
            line-height: 197px;
            color: #fff;
        }

        .ban1 span {
            color: #a7bdec;
            font-weight: normal
        }

        .box1 {
            height: 56px;
            border-bottom: solid 1px #c4c4c4;
            width: 1280px;
            margin: 50px auto 0 auto;
            font-size: 16px;
            line-height: 56px;
            color: #666;
			text-align:left;
        }

        .box1 span {
            float: right;
        }

        .box2 {
            width: 1280px;
            margin: auto;
            padding: 30px 0 20px 0;
            height: 1%;
            overflow: hidden;
            font-size: 18px;
            line-height: 32px;
        }

        .box2 h1 {
            font-size: 45px;
            text-align: center;
            color: #166cc4;
            padding: 20px 0;
            line-height: 50px;
        }

        .box2 h2 {
            font-size: 18px;
            color: #666;
            font-weight: normal;
            text-align: center;
            padding-bottom: 30px;
        }

        .nav-item {
            width: 150px;
        }

        @media screen and (max-width: 750px) {
            html {
                font-size: 312.5%
            }

            .nav-wrapper {
                width: 100%;
                display: flex;
                justify-content: space-between;
            }

            .nav-item {
                width: 100%;
            }

            .nav-item>a {
                width: auto;
                height: auto;
            }

            .box1 {
                width: 100%;
                height: auto;
                padding: 0 0.3rem;
                box-sizing: border-box;
            }

            .box2 {
                width: 100%;
                box-sizing: border-box;
                padding: 0 0.3rem;
            }
        }