body {
    display: flex;
    flex-direction: column;
    text-align: center;
    height: 100%;
    background-color:rgb(64, 64, 64);
}

a {
    text-decoration: none;
    color:rgb(51, 153, 255);
}

h1 {
    color:rgb(51, 153, 255);
}

button {
    color:rgb(51, 153, 255);
    margin:1%;
    margin-left: 20%;
    margin-right: 20%   ;
    padding: 1.5%;
    background-color:rgb(32, 32, 32) ;
    border-color: grey;
    border-radius: 5%;
    -moz-border-radius: 20px;
    -webkit-border-radius: 20px;
    display: block;
}
#choix {
    position: relative;
    height: auto;
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: space-around;

    
}