.xb-wishlist__btn-custom button {
  width: 32px;
}

.xb-wishlist__button-icon--loading {
    width: 28px;
    height: 28px;
    border: 2px solid #ddd;
    border-bottom-color: transparent;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    }

    @keyframes rotation {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
    }