Electro v2 - Adding png as icon for menus

style.css

.ci-icon {
    width: 28px;
    height: 28px;
    display: inline-block;
    background-position: center;
    background-size: cover;
    margin-bottom: 0 !important;
}

.mobile-handheld-department ul.nav li a i {
    font-size: 28px;
}

.ci-vase {
    background-image: url(https://www.dewoonpartner.nl/wp-content/uploads/2019/03/vase.png);
}

.ci-cabinet {
    background-image: url(https://www.dewoonpartner.nl/wp-content/uploads/2019/03/cabinet.png);
}

.ci-table {
    background-image: url(https://www.dewoonpartner.nl/wp-content/uploads/2019/03/table.png);
}