.chronologie {
  position: relative;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 30px;
  max-width: var(--blog);
}

.date_annee {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 10px 50px;
  height: 60px;
  width: 60px;
  color: var(--bleu);
  font-size: 13px;
  background: var(--blanc);
  border: 10px solid var(--gris);
  border-radius: 50%;
  box-shadow: rgba(9, 30, 66, 0.25) 0px 4px 8px -2px, rgba(9, 30, 66, 0.08) 0 0 0 1px;
  transition: border-color 1s ease;
}

.date_annee.active {
  border-color: var(--rouge);
  color: var(--rouge);
}

.date_annee:hover {
  cursor: pointer;
  border-color: var(--bleu);
}

.date_annee.periode a {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.05;
}

.date_annee.periode span {
  font-size: 0.75em;
}