.layui-nav .layui-nav-child dd:hover ul {
    display: block;
    position: absolute;
    top: 0px;
    left: 99px;
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,.12);
    border: 1px solid #d2d2d2;
    border-radius: 2px;
}

/*放上去之前掩藏*/
.layui-nav .layui-nav-child dd ul {
    display: none;
}

layui-nav .layui-nav-child dd ul a:hover {
    background: #f0f0f0;
}

.article-main .typetag {
    font-size: 16px;
    font-weight: bold;
    line-height: 36px;
    color: #333;
    border-bottom: #db6d4c 4px solid;
}

.layui-nav .layui-nav-child dd:hover ul {
    display: block;
    position: absolute;
    top: 0px;
    left: 99px;
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,.12);
    border: 1px solid #d2d2d2;
    border-radius: 2px;
}

/*放上去之前掩藏*/
.layui-nav .layui-nav-child dd ul {
    display: none;
}

    .layui-nav .layui-nav-child dd ul a {
        font-size: 12px;
    }

        .layui-nav .layui-nav-child dd ul a:hover {
            background: #f0f0f0;
        }

.arrow-right {
    width: 0;
    height: 0;
    border-top: 5px dashed transparent;
    border-bottom: 5px dashed transparent;
    border-left: 5px solid #777;
    font-size: 0;
}