media.css

@media (max-width: 1000px) {

    .basket-product > div:nth-child(1) {
        flex-direction: column;
    }

    .basket-product > div:nth-child(1) > div:nth-child(1) {
        width: 100%;
    }

    .basket-product > div:nth-child(1) > div:nth-child(2) {
        width: 100%;
    }

    .basket-total div:nth-child(1) {
        margin: 0 auto 10px auto;
    }

    .basket-total div:nth-child(2) {
        margin: 0 auto 10px auto;
    }

    .basket-total div:nth-child(3) {
        margin: 0 auto auto auto;
    }

    .basket-order div:nth-child(1) {
        margin: 0 auto 10px auto;
    }

    .basket-order div:nth-child(2) {
        margin: 0 auto 10px auto;
    }

    .basket-order div:nth-child(3) {
        margin: 0 auto auto auto;
    }
}

@media (max-width: 820px) {
    .basket-box {
        width: 95%;
    }
}

@media (max-width: 640px) {
    .basket-product {
        flex-direction: column;
    }

    .basket-product > div:nth-child(1) {
        width: 100%;
    }

    .basket-product > div:nth-child(2) {
        width: 100%;
        height: 50px;
    }

    .basket-product > div:nth-child(1) > div:nth-child(1) {
        flex-direction: column;
    }

    .basket-product > div:nth-child(1) > div:nth-child(2) {
        flex-direction: column;
    }

    .basket-product > div:nth-child(1) > div:nth-child(1) > div:nth-child(1) {
        width: 100%;
    }

    .basket-product > div:nth-child(1) > div:nth-child(1) > div:nth-child(2) {
        width: 100%;
    }

    .basket-product > div:nth-child(1) > div:nth-child(2) > div:nth-child(1) {
        width: 100%;
    }

    .basket-product > div:nth-child(1) > div:nth-child(2) > div:nth-child(2) {
        width: 100%;
    }

    .basket-total div {
        margin: auto;
    }
}