.two-x-image {
    background: #f4f6f4;
    width: 100%;
    padding: 30px 15px;
    box-sizing: border-box;
    margin: 0 0 50px;
}

.two-x-image img {
    flex: 1;
    min-width: 0;
    margin: 0 15px;
}

@media ( max-width: 900px ) {
    .two-x-image {
        flex-direction: column;
        margin: 0;
        padding: 25px 0 0;
    }

    .two-x-image img {
        margin: 0 0 25px;
        width: 100%;
    }
}