.single_add_to_cart_button.cgm-loading { pointer-events: none; opacity: .7; }

.single_add_to_cart_button.cgm-loading::after {
    content: "";
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 10px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    vertical-align: -2px;
    animation: cgm-cart-spin .6s linear infinite;
}

@keyframes cgm-cart-spin { to { transform: rotate(360deg); } }