body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  color: #333;
}

header {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 30px 20px;
}

header h1 {
  margin: 0;
  font-weight: 600;
  font-size: 2.5rem;
}

header p {
  margin-top: 10px;
  font-weight: 400;
  font-size: 1.1rem;
}

.conteneur {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 0;
  text-align: center;
}

.a-propos h2 {
  text-align: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.a-propos p {
  line-height: 1.6;
  margin-bottom: 15px;
  text-align: center;
}

.liste-outils {
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.liste-outils img {
  width: 60px;
  height: 60px;
  transition: transform 0.3s, filter 0.3s;
  cursor: pointer;
}

.liste-outils img:hover {
  transform: scale(1.2);
  filter: brightness(1.2);
}

.liste-projets {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

.projet-item {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 25px;
  width: 350px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.projet-item h3 {
  margin-bottom: 15px;
  font-size: 1.5rem;
}

.projet-item p {
  font-size: 1rem;
  margin-bottom: 20px;
}

.projet-item a {
  display: inline-block;
  padding: 10px 25px;
  background-color: #333;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s;
}

.projet-item a:hover {
  background-color: #555;
}

.projet-item:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.liste-reseaux {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 25px;
  margin-top: 20px;
}

.liste-reseaux img {
  width: 50px;
  height: 50px;
  transition: transform 0.3s, filter 0.3s;
  cursor: pointer;
}

.liste-reseaux img:hover {
  transform: scale(1.2);
  filter: brightness(1.2);
}

section {
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 30px 20px;
  margin-bottom: 30px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

footer {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}

@media (max-width: 768px) {
  .projet-item {
    width: 45%;
  }

  .liste-outils img,
  .liste-reseaux img {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 480px) {
  .projet-item {
    width: 90%;
  }

  .liste-outils img,
  .liste-reseaux img {
    width: 40px;
    height: 40px;
  }
}