.drop {
    position: relative;
    z-index: 9999;
}

.drop>.sub_nav {
    position: absolute;
    left: 0;
    top: 80px;
    display: flex;
    flex-direction: column;
    border: 1px solid #fff;
    border-top: none;
    display: none;
    box-shadow: 0 7px 7px #ccc;
}

.drop>.sub_nav>li {
    /* width: 192px; */
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: stretch;
    background: rgba(218, 234, 247, 0.8);
    border-bottom: 1px solid #ffffff;
}

.drop>.sub_nav>li>a {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #023559;
}

.drop>.sub_nav>li:last-child {
    border-bottom: none;
}

.drop>.sub_nav>li:hover {
    color: #fff;
    cursor: pointer;
    background: #094492;
}

.drop>.sub_nav>li:hover a {
    color: #fff;
}

.drop:hover>.sub_nav {
    display: block;
}