.xb-wishlist-button-collection{
  position:absolute!important;
  top:12px!important;
  right:12px!important;
  width:40px;
  height:40px;
  border-radius:50%;
  background:rgba(255,255,255,0.8); /* <— διαφάνεια */
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:15;
}