main {
    margin: 0 2rem;
}

h1 {
    border-bottom: 1px solid var(--gris-fonce);
    margin: 55px 5rem;
}

h2 {
    font-size: 1.6rem;
    text-align: left;
    color: var(--petrole);
}

.button2 {
    display: block;
    width: 30%;
    text-align: center;
    text-decoration: none;
    margin: 0 auto;
    margin-bottom: 4rem;
    margin-top: 4rem;
}

main section.intro {
    overflow: auto;
    margin-bottom: 1.5rem;
}

main section.intro img {
    float: left;
    width: 12rem;
    height: auto;
    margin: 0 1.5rem 1rem 0;
    display: block;
    border-radius: 4px;
}

main section.intro+h2,
main section.intro+p,
main section.intro+.button2 {
    clear: both;
}


main>h2,
main>p {
    clear: both;
}

@media screen and (min-width: 768px) {
    main {
        max-width: 70rem;
        display: flex;
        flex-direction: column;
        margin: auto;
    }
}