body {
  margin: 0;
  padding: 0;
  font: 24px "Palatino Linotype", serif;
  background: linear-gradient(to right, #2c3e50, #3498db);
  color: white;
}

.menuderoulant {
  list-style: none;
  padding: 10px;
  margin: 40px;
  display: flex;
  justify-content: center;
  gap: 60px;
}

.menuderoulant li {
  position: relative;
  text-align: center;
}

.menuderoulant li a {
  display: block;
  color: #FFFFFF;
  background: #0085CA;
  padding: 6px 10px;
  border-right: 1px solid #FFFFFF;
  text-decoration: none;
  width: 200px;
}

.menuderoulant li a:hover {
  background-color: #199BD2;
}

.menuderoulant li a:active {
  background-color: #F88E55;
}

.sousmenu {
  list-style-type: none;
  display: none;
  padding: 0;
  margin: 0;
  position: absolute;
  top: 100%;
  left: 0;
  width: 200px;
}

.sousmenu li a {
  display: block;
  color: #FFFFFF;
  text-decoration: none;
  background-color: #F88E55;
  padding: 6px 10px;
}

.sousmenu li a:hover {
  background-color: #199BD2;
}

.menuderoulant li:hover .sousmenu {
  display: block;
}

.menuderoulant li img {
  width: 180px;
  height: auto;
  margin-top: 20px;
  animation: bounce 5s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(100px); }
}

.avion {
  width: 150px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.coeur {
  position: absolute;
  top: 400px;
  left: 600px;
  width: 150px;
}

.manette {
  width: 150px;
  position: absolute;
  top: 400px;
  right: 600px;

}

.avion {
  animation: bounce 5s ease-in-out infinite;
}

.coeur {
  animation: bounce 5s ease-in-out infinite;
}

.manette {
  animation: bounce 5s ease-in-out infinite;
}

.retour {
  display: inline-block;
  background-color: #0085CA;
  color: white;
  text-decoration: none;
  padding: 10px 20px;
  font-size: 18px;
  border-radius: 8px;
  transition: background-color 0.3s ease;
  margin: 20px auto;
}

.retour:hover {
  background-color: #199BD2;
}