body{
    background-color: lightblue;
    color:black;
    margin: 0;
}

h1{
    font-size: 4vw;
    margin: 2%;
}
h2{
    font-size: 3vw;
    margin: 1%;
}
p{
    font-size: 2vw;
    margin: 0.5%;
}
li {
    font-size: 2vw;
    margin: 0.5%;
}


#Retour:hover
{
    color: black;
    background-color: white;
}

#Retour{
    margin: 2%;
    background-color: blue;
    color: white;
    height: 2%;
    width: auto;
    border-radius: 10vw;
}