body {
    background-color: black;
    color: antiquewhite;
    font-family: Verdana;
    display: flex;
    justify-content: center;
    
    margin: 0;
    padding: 0;
}

.bande-millieu {
    background-color: rgba(255, 255, 255, 60);
    width: 800px;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}