*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 微软雅黑, "MicrosoftJhengHei", 华文细黑, STHeiti, MingLiu;
}


 .top{
    width: 100%;
    height: 255px;
    background-image: url('../imgs/top-bg.png');
}

.top-content{
}

.top-nav-wrapper{
    width: 100%;
    background-color: #3a74be;
}

.top-nav{
    height: 60px;
}
 
.top-nav-wrapper .top-nav-item {
    width: calc(1200px / 9);
    background-color: #3a74be;
    text-align: center;
    height: 60px;
    line-height: 60px;
}

.top-nav-wrapper .top-nav-item a {
    font-size: 16px;
    color: #eeeeee;
    width: 100%;
    height: 100%;
    display: block;
}

.top-nav .nav {
    background-color: #3a74be;
    height: 100%;
    /* overflow: hidden; */
    box-sizing: border-box;
    padding: 0;
    display: flex;
    
}

.top-nav-item:hover {
    background-color: #337ecc;

}

.top-nav-item.active{
    background-color: #52a6ef;
}

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


.top-nav .xwzx-nav:hover .er-sub-menu-wrapper,.top-nav .er-sub-menu-wrapper:hover{
    display: block;
}

.top-nav .er-sub-menu-item{
    color: #000;
}


.top-nav .er-sub-menu-item:hover{
    background-color: #f8f8f8;
    color: rgba(0, 0, 0, .8);
}



.top-nav .er-sub-menu-wrapper{
    display: none;
    animation-name: layui-upbit;
    animation-duration: .3s;
    animation-fill-mode: both;

    left: 0;
    top: 60px;
    min-width: 100%;
    line-height: 36px;
    padding: 5px 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .12);
    border: 1px solid #eee;
    background-color: #fff;
    z-index: 100;
    border-radius: 2px;
    white-space: nowrap;
    box-sizing: border-box;
}