/* Style général */
body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    background-color: #111;
    color: #fff;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header, footer {
    background-color: #222;
    padding: 1rem;
    text-align: center;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#slideshow {
    max-width: 90%;
    max-height: 90%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

#slideshow img {
    max-width: 100%;
    max-height: 100%;
    position: absolute;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

#slideshow img.active {
    opacity: 1;
}