.submainmenu {
    padding: 42px 0;
    display: block;
    text-align: center;
    color: #fff;
    border-bottom: 1px solid red;
    font-size: 24px;
    /* background-color: #3f3b72;*/
    background-image: url(http://artko31.netto.kr/html/widgets/theme/default2/submenu/img/sidemenuimg.jpg);
    background-size: cover;
}

.submenu li {
    font-weight: bold;
    padding: 15px 0 13px 20px;
    font-size: 18px;
    border-bottom: 1px solid #e6e5e5;
}
.submenu ul{ border-bottom: 5px solid #3f3b72;}
/*.submenu li:last-child { border-bottom: 1px solid #3f3b72;}*/

.fas {
    position: relative;
    top: 1px;
}

.submenu li:hover {
    color: #f1f1f1;
    background-color: #3f3b72;
}

.submenu li a:active {
    color: #f1f1f1;
}

.submenu li.now-menu {
    color: #f1f1f1;
    background-color: #3f3b72;
}