/* Réinitialisation des marges et des paddings */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Style général du corps */
body {
    font-family: 'Roboto', sans-serif;
    background-color: #f4f4f9;
    color: #333;
}

/* Conteneur principal */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* En-tête */
header {
    background-color: #333;
    color: white;
    padding: 20px 0;
}

header h1 {
    text-align: center;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    margin-top: 10px;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.1em;
    padding: 8px 15px;
    transition: background-color 0.3s ease;
}

nav ul li a:hover {
    background-color: #555;
    border-radius: 5px;
}

/* Style de la section principale */
.content {
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Style des boutons de retour */
.container-retour {
    margin-top: 20px;
    text-align: center;
}

.Retour {
    display: inline-block;
    margin: 10px 5px;
    padding: 12px 20px;
    background-color: #3498db; /* Couleur bleu */
    color: white;
    text-decoration: none;
    font-size: 1.1em;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.Retour:hover {
    background-color: #2980b9; /* Couleur bleu foncé au survol */
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

/* Pied de page */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
    margin-top: 20px;
}