.nav_menu div {
    position: absolute;
    left: 260px;
    width: 180px;
}

    .nav_menu div > ul {
        position: relative;
        top: -46px;
        background-color: white !important;
    }

        .nav_menu div > ul > li.item {
            margin-bottom: 1px;
        }

            .nav_menu div > ul > li.item > a {
                height: 45px;
                line-height: 45px;
                text-align: left;
                /*background-color: #e6e7e7;*/
            }