.flex-box {
    display: flex;
    justify-content: space-between;
}

.flex-box::before,
.flex-box::after {
    display: none;
}
.prices {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.prices-item {
    font-family: "Roboto Slab", sans-serif;
    font-size: 40px;
    color: #fff;
}
@media (max-width: 768px) {
    .flex-box {
        flex-direction: column;
    }
    .prices {
        align-items: center;
    }
    .prices-item {
        font-size: 30px;
    }
}