.region-sidebar__block-body.region-sidebar--actie {
    background: white;
}
.region-sidebar--actie a {
color:white; margin-bottom:1em;
padding-left:40px;
}

.region-sidebar--actie a:before {
    /* background: rgba(0, 0, 0, 0) url("/sites/all/modules/aserv/aserv_media/images/sidebar-button-icoon--zorgactie.png") repeat scroll 0 0; */
    content: "";
    height: 20px;
    left: 10px;
    position: absolute;
    top: 10px;
    width: 20px;
   background-size:cover;
}