/*your custom css goes here*/ 
.out-of-stock-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.85);
    color: #fff;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 13px;
    font-weight: 600;
    z-index: 10;
    text-align: center;
}
.cart-btn.disabled {
    background-color: #aaa !important;
    cursor: not-allowed !important;
    pointer-events: none;
}