body {

    background-image: url("../image/fondvtt.jpg") ;
    background-repeat: repeat-y;
    background-attachment: fixed;
    background-size: cover;
    
}
nav{
    background-color: rgba(193, 193, 193, 0.351);
    border:7px solid rgb(255, 255, 255);
}
h1{
    background-color: rgba(193, 193, 193, 0.351);
    border:7px solid rgb(255, 255, 255);
    text-align: center;
    font-size: xx-large;
}