.header {
    width: 100%;
    position: relative;
}

.header-top {
    width: 100%;
    height: 70px;
    border-bottom: 2px solid #fff;
}

/* .header-top:hover {
    height: 570px;
    background-color: #fff;
    color: #000;
} */

.header-top:hover a {
    color: black;
}

.header-top .logo {
    width: 20%;
    height: 52px;
    float: left;
    background: url(../img/logo.svg) no-repeat;
    margin-top: 14px;
}

/* .header-top:hover .nav-item ul {
    display: block;
} */

.nav-banner {
    float: left;
    width: 80%;
    height: 70px;
}

.nav-banner .nav-item {
    float: left;
    width: 10%;
    text-align: center;
}

.nav-banner .nav-item .a:hover {
    /* font-size: 16px; */
    color: #174698;
}

.nav-banner .nav-item ul {
    display: none;
}

.nav-banner .nav-item ul li {
    height: 40px;
}

.nav-banner a {
    display: block;
    width: 97px;
    color: black;
}

.nav-banner .nav-item .a {
    font-size: 14px;
    font-weight: 900;
}

.nav-banner .nav-item ul li:hover .b {
    font-size: 14px;
    color: #174698 !important;
}

#kefu {
	background-image: url(../img/kefu.png);
	background-size: 20px 20px;
	background-repeat: no-repeat;
	text-align: right;
	margin-left: 42%;
	background-position: 0 25px;
}

#kefu a {
	display: inline-block;
	margin-left: 61%;
}

.tab {
    background-color: #f7f8f9;
    box-shadow: 2px;
}

.tab-content {
}

.tab-top {
    margin-top: 60px;
}
.two {
    margin-top: 40px;
}

.two li {
    padding-bottom: 10px;
}

.tab-bottom {
    margin-top: 40px;
}

.tab-bottom img {
    width: 100%;
}

.yuanquan {
    display: inline-block;
}

.tab-center {
    width: 100%;
    margin-top: 40px;
	overflow: hidden;
}

.tab-center img {
    float: left;
    width: 21%;
    margin-right: 10%;
}

.img-right {
    margin-top: 114px;
}