@media (max-width: 768px) {
    .section-content-home,
    .section-content,
    .image-menu {
        flex-direction: column;
    }
    #landing-page-content,
    #landing-page-image,
    #section-content-1,
    #section-content-2,
    #section-content-3 {
        flex: none;
        width: 100%;
        margin: 10px 0;
    }
}