body{
    background: url() fixed no-repeat top right;
    background-color:Lavender;
    font-family: 'Roboto Mono', monospace;
}

.img{
    border: 3px red solid;
    border-radius: 10px;
    clear:both;
    height: 500px;
    
}

.titre-principal{
    font-family: 'Roboto Mono', monospace;
    font-size: 40px;
    color: firebrick;
    text-decoration: underline;
    text-align: center;
}

.titre{
    font-family: 'Roboto Mono', monospace;
    font-size: 20px;
}

.preface{
    font-family: 'Roboto Mono', monospace;
    font-size: 20px;
}

.num{
    font-family: 'Roboto Mono', monospace;
    font-size: 15px;
}


.config-debian{
    font-family: 'Roboto Mono', monospace;
    font-size: 15px;
    font-style:italic
}

.conf-res{
    font-family: 'Roboto Mono', monospace;
    font-size: 15px;
    font-style:italic;
}

.fin{
    font-family: 'Roboto Mono', monospace;
    font-size: 15px;   
}