.contenuContainer {
  padding: 20px 20px 20px 20px;
  width: 30%;
  margin: auto auto;
  margin-top: 50px;
  border: solid 1px black;
  text-align: center;
}

.boite {
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  margin-top: 10vh;
  border: solid 3px;
  border-radius: 10px;
  padding: 20px 40px 20px 40px;
  background-color: #ffffff;
  text-align: center;
  box-shadow: 10px 5px 5px black;
}