.topbar-nav {
    background: #333333;
width: 400px;

}
.topbar-nav ul {
    padding: 0;
    margin: 0;
    list-style: none;
    background: #333333;
}
.topbar-nav .metismenu {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    flex-wrap: nowrap;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
}
.topbar-nav .metismenu > li {
    -webkit-box-flex: 1;
        -ms-flex: 1 1 0%;
            flex: 1 1 0%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    flex-wrap: nowrap;
width: 153px;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    position: relative;
}

.topbar-nav .metismenu a {
    position: relative;
    display: block;
    padding: 8px;
width: 180px;
color: #ffffff;
font-size: 13px;
background: #333333;
    outline-width: 0;
    transition: all .3s ease-out;
}


.topbar-nav .metismenu a:hover,
.topbar-nav .metismenu a:focus,
.topbar-nav .metismenu a:active {
    color: #f8f9fa;
    text-decoration: none;
    background: #0b7285;
}

@media (min-width: 250px) {
    .topbar-nav .metismenu {
        -webkit-box-orient: horizontal;
        -webkit-box-direction: normal;
            -ms-flex-direction: row;
                flex-direction: row;
    }
    .topbar-nav .metismenu > li {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
            -ms-flex-direction: column;
                flex-direction: column;
    }
    .topbar-nav .metismenu > li > ul {
        position: absolute;
        top: 100%;
        min-width: 100%;
        z-index: 1001;
    }
}