.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 .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 {
    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;
    background-position: 0 25px;
}

#kefu a {
    display: inline-block;
    margin-left: 25px;
}

.tab {
    width: 100%;
    height: 60px;
    background: #F7F8F9;
    line-height: 60px;
    box-shadow: 0px 2px 2px 0 rgba(172, 172, 172, 0.5);
}

.tab ul {
    width: 100%;
    height: 60px;
}

.tab ul li {
    /* padding-right: 67px; */
    margin-right: 67px;
    height: 60px;
    float: left;
    font-size: 14px;
    color: #6666;
    line-height: 60px;
}

form {
    position: relative;
    padding-top: 60px;
}

form lable {
    font-size: 18px;
}

form input {
    height: 45px !important;
}

.last {
    height: 75px !important;
}

.tab-content {
    width: 100%;
    padding-bottom: 50px;
}

.tab-content .name {
    float: left;
    width: 25%;
}
.tab-content .address {
    float: left;
    width: 40%;
}

.tab-content .email {
    float: left;
    width: 89%;
}

.tab-content .question {
    width: 89%;
    overflow: hidden;
}

.form-group {
    margin-bottom: 35px;
}

button {
    display: block!important;
    width: 200px;
    height: 60px;
    margin: 0 auto;
    font-size: 18px;
}