body {
    /*background-image: url('/images/fond.webp');*/
    background-size: cover;
    width: 100%;
}

h1 {
    margin: 60px;
}

@media (max-width: 700px) {
    body {
        background-image: unset;
    }

    h1 {
        margin: 52px;
    }
}