@media screen and (max-width: 760px) {

    #blockcart-modal .modal-footer {

        display: flex;

        flex-direction: column;

        justify-content: center;

        align-items: center;

        width: 100%;

    }

    #blockcart-modal .modal-footer * {

        width: 100% !important;

        max-width: 100% !important;

        text-align: center;

    }

    #blockcart-modal .modal-footer button {

        margin-bottom: 15px;

    }

}