.separation {
  width: 50vw;
  border-top: 4px solid rgba(206,206,207,0.4);
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 422px) {
  .espacement-top {
    height: 160px;
  }
}

@media (min-width: 422px) {
  .espacement-top {
    height: 130px;
  }
}

@media (min-width: 818px) {
  .espacement-top {
    height: 110px;
  }
}