* {
    margin: 0;
    padding: 0;
   }
body {
    background-image: url('../css/ticket-fdj.jpg');
    height: 100vh;
    min-height: 500px;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-color: aliceblue;
  
    }
    .img-fluid { 
        max-width: 100%; 
        height: auto;
        margin: auto; 
    } 
    .footer {
        padding: 30px;
        position: sticky;
    }