* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-image: url(eau..jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

a {
    color: yellow;
    text-decoration: none;
    text-align: center;
    font-size: clamp(1.2rem, 4vw, 3rem);
    font-weight: bold;
}


@media screen and (max-width: 768px) {
    a {
        font-size: clamp(1rem, 5vw, 2.5rem);
    }
}


@media screen and (max-width: 480px) {
    body {
        padding: 10px;
        background-position: center center;
    }

    a {
        font-size: 1.5rem;
    }
}