*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
}
html{
    font-size: 62.5%;/* 1rem = 10px*/
}
body{
    font-size: 1.4rem;/* soit 14px*/
    font-family: arial;
    color: white;
}
.container{
    height: 100vh;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    background-color: #1E2337;
}

.banniere-titre{
    margin-bottom: 1rem;
}
.cookies{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;/*nécessaire de préciser une width si position:fixed*/
    background-color: grey;
    display: flex;
    justify-content: space-between;/*positionner les DIV enfants*/
    align-items: center;/*centrer verticalement*/
    padding: 3rem;
    opacity: 1; /* modification de cette valeur en Javascript*/
    transition: 0.5s;
}
.cookies-btn{
    display: flex;
}
.btn{
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 10px;
}
.btn.btn-success{
    background-color: #1E2337;
}
.btn.btn-deny{
    background-color: grey;
}