.uk-offcanvas-bar {
    --uk-inverse: light;
    position: absolute;
    top: 0;
    bottom: 0;
    left: -270px;
    box-sizing: border-box;
    width: 270px;
    padding: 20px 20px;
    background: #404042 !important;
    overflow-y: auto;
    color: white !important;
}