.vc_images_carousel .vc_carousel-control .icon-prev,
  .vc_images_carousel .vc_carousel-control .icon-next {
    width: 80px;
    height: 80px;
    margin-top: -15px;
    margin-left: -15px;
    font-size: 30px;
    display: block;
    padding: 0;
  }