.headerhead {
    background: url(https://www.ejournal.poltekktb.com/public/site/images/adminojs/trivium-banner-jurnal.png) #83B5DD no-repeat !important;
    background-size: cover !important;
    background-blend-mode: multiply !important;
}
.sidebar ul li::after {
    display: none !important;
 }
 ul.sidemenu li {
    list-style: none;
    border-bottom: 1px solid #ddd9d9;
    padding: 5px;
    margin: 1px;
}
ul.sidemenu li a:hover {
    text-decoration: none;
    color: #2e71b7;
}