/* Réinitialisation */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #7dbcd7; /* Couleur de fond*/
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    justify-content: space-between;
}

/* En-tête */
header {
    width: 100%;
    padding: 1rem 0;
    background: #407ef0;
    text-align: center;
}

.header-btn {
    background: #ffffff;
    color: #15284c;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s ease, color 0.3s ease;
}

.header-btn:hover {
    background: #407ef0;
    color: #fff;
}

/* Conteneur principal */
.container {
    width: 80%;
    max-width: 1000px;
    background: #fff;
    padding: 2rem;
    margin: 2rem auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Titres */
h1, h2, h3 {
    color: #33599f;
    margin-bottom: 1rem;
}

/* Texte justifié */
p, ul, ol {
    text-align: justify;
    line-height: 1.8;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* Listes */
ul, ol {
    padding-left: 2rem;
}

/* Footer */
footer {
    width: 100%;
    padding: 1rem 0;
    background: #74a1f4;
    text-align: center;
    color: white;
    font-size: 1rem;
}