.btn_accueil {
  background-color: black;
  position: relative;
  color: white;
  padding: 10px;
  border-radius: 5px;
  height: 50px;
  width: 160px;
  overflow: hidden;
  cursor: pointer;
}

.btn_animation {
  background-color: var(--bs-secondary);
  display: flex;
  position: absolute;
  justify-content: center;
  align-items: center;
  top: 100px;
  left: 0;
  height: 100px;
  width: 160px;
  z-index: 2;
  border-radius: 20px;
}

.btn_accueil:hover > .btn_animation {
  top: -30px;
  transition: top 0.8s;
}

.p_accueil {
  position: absolute;
  z-index: 10;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  margin: 0;
  width: 100%;
}