.carrinho-produto.opacity-item-catalogo{
    opacity: 0.4;
    -webkit-transition: opacity 0.1s ease-in-out;
    -moz-transition: opacity 0.1s ease-in-out;
    -ms-transition: opacity 0.1s ease-in-out;
    -o-transition: opacity 0.1s ease-in-out;
    transition: opacity 0.1s ease-in-out;
}

.item-removendo {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 1s ease, transform 1s ease;
}