.petite, .grande {
    cursor: pointer
}

.grande {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.4);

    display: none;
    align-items: center;
    justify-content: center;
}

.grande img {
    max-width: 90%;
    height: auto;
    border: 4px white solid;
    border-radius: 5px;
}