body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.logo {
    position: fixed;

}

.titre {
    padding-top: 50px;
    padding-left: 100px;
}

.menu {
    padding-left: 100px;
    monospace
}

.foot {
    position: fixed;
    bottom: 5px;
    left: 0;
    right: 0;
    text-align: center;
}