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

body {
    font-family: Arial, sans-serif;
}

.banniere {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background-color: #989221;
    color: white;
    padding: 20px;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

.banniere h2 {
    margin-bottom: 15px;
}

.banniere p {
    font-size: 14px;
}

.contenu {
    margin-left: 270px; /* Pour que le contenu ne chevauche pas la bannière */
    padding: 20px;
}

.contenu h1 {
    font-size: 24px;
    color: #333;
}