#collections {
    display: flex;
    list-style: none;
    position: absolute; /* postulat de départ */
    top: 50%; left: 50%; /* à 50%/50% du parent référent */
    transform: translate(-50%, -50%); /* décalage de 50% de sa propre taille */
    padding: 0;
    margin: 0;
}
#collections li {
    text-align: center;
    margin: 5vh;
}
#collections li a {
    text-decoration: none;
    color: white;
}
#collections .bubulle {
    display: block;
    width: 0px;
    height: 0px;
    border: solid 2.5vh white;
    border-radius: 100%;
    padding: 11vh;
}
#collections .village {
    background: url('../img/village.jpg') center;
    background-size: 80vh;
    background-position: 65% 65%;
}
#collections .fleurs {
    background: url('../img/fleurs.jpg') center;
    background-size: 58vh;
    background-position: 52% 65%;
}
#collections .text {
    display: block;
    font-family: Sacramento;
    font-size: 5vh;
    margin-top: 2vh;
}