body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;

    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;

    background-image: url(fond.jpg);
    background-repeat: no-repeat;
    background-size: cover;
}
div {
    width: 40%;
    background-color: rgba(255,255,255, 0.2);
    padding: 20px;
    border-radius: 5px;
    backdrop-filter: blur(7px);
    color:black;
}