.ulwm-purchase-btn {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: #2271b1;
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    opacity: 0;
    z-index: 100;
}

.wp-block-image:hover .ulwm-purchase-btn,
.wp-post-image:hover + .ulwm-purchase-btn {
    opacity: 1;
}

.ulwm-purchase-btn:hover {
    background: #135e96;
}

.ulwm-purchase-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}