.index-three {
    width: 80%;
    margin: 30px auto;

    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 25px;

    align-items: start;
}

.index-picture img {
    width: 100%;
    height: auto;
    display: block;
}

/* iPhone and small screens */
@media (max-width: 700px) {

    .index-three {
        width: 90%;
        grid-template-columns: 1fr;
    }

}