body {
    margin:0;
    padding:0;
    padding-top:70px;
    font-family: "Microsoft YaHei","微软雅黑",PingFangSC-Regular,Helvetica,sans-serif;
    font-size: 14px;
}

h1,h2,h3,h4,h5 {
    margin:0;
    padding:0;
}

a {
    text-decoration: none;
    cursor: pointer;
}

.gray-background-color {
    background-color: #f0f0f0;
}

/*  头部导航栏 */
.nav { 
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    width:100%;
    z-index: 999;
    border-bottom:1px;
    box-shadow: 0 3px 3px 0 rgba(0, 0, 0, 0.06);
    background-color: #fff;
 }

.nav-container {
    width: 1000px;
    margin: 0 auto;
    padding: 0;
}

.nav-left {
    float: left;
    z-index: 999;
}

.nav-logo-img {
    width: 140px;
    margin-top:17px;
}

.nav-right {
    float: left;
    margin-left: 240px;
    text-align: center;
}

.nav-menu-ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-menu-ul li {
    text-decoration: none;
    position: relative;
    float: left;
    width:66px;
    height:70px;
    line-height: 70px;
    margin:0 24px;
}

.nav-menu-ul li:hover {
    border-bottom: 3px solid #0386f6;
}

.nav-menu-ul .nav-down {
    border-bottom: 3px solid #0386f6;
}


.nav-menu-ul a {
    color:#333;
}

/* .nav-menu-ul a:hover {
    color:#06acf7;
} */

/*  尾巴导航栏 */

.footer {
    background-color: #3c3d41;
    color: #fff;
    font-size: 16px;
    padding-top: 0;
}

.footer-main {
    display: flex;
    justify-content: space-around;
    padding-bottom: 18px;
    padding-top: 32px;
}

.footer-main-item {
    width:200px;
    margin:0 auto;
}

.footer-main-item a {
    display:block;
    color: #d2d1d1;
    line-height: 1.7;
}

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

.footer-main-item div {
    display:block;
    color: #d2d1d1;
    line-height: 1.7;
}


.footer-main-item h5{
    font-size: 18px;
    color: #fff;
    font-weight: bold;
    padding-bottom: 14px;
}

.width-style-1 {
    flex: 0 0 26%;
}

.width-style-2 {
    flex: 0 0 16%;
}

.width-style-3 {
    flex: 0 0 16%;
}

.width-style-4 {
    flex: 0 0 26%;
}

.footer-copyright {
    background-color: #333;
    padding-top: 38px;
    padding-bottom: 38px;
    text-align: center;
}