h1.titre {
  font-size: 30px;
  font-family: Verdana;
  font-weight: bold;
  color: orange;
  margin-bottom: 20px;
}

h2 {
  font-size: 24px;
  font-family: Verdana;
  font-weight: bold;
  color: #2c3e50;
  margin-top: 20px;
  margin-bottom: 10px;
}

.h3-description {
  font-size: 20px;
  font-family: Verdana;
  font-weight: bold;
  color: #34495e;
  margin-top: 18px;
  margin-bottom: 8px;
}

h4 {
  font-size: 16px;
  font-family: Verdana;
  font-weight: normal;
  color: #555;
  margin-top: 12px;
  margin-bottom: 6px;
}