body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #fff;
    color: #333;
}
header {
    background: #2b6777;
    color: #fff;
    padding: 1em;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
header h1 {
    margin: 0;
}
nav ul {
    list-style: none;
    display: flex;
    gap: 1em;
}
nav ul li {
    display: inline;
}
.hero {
    background: #c8d8e4;
    text-align: center;
    padding: 2em 1em;
}
section {
    padding: 2em 1em;
}
.produits-grid, .vehicules-grid {
    display: flex;
    gap: 1em;
    flex-wrap: wrap;
}
.produit, .vehicule {
    border: 1px solid #ccc;
    padding: 1em;
    width: calc(50% - 1em);
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}
form {
    display: flex;
    flex-direction: column;
    gap: 1em;
}
input, textarea {
    padding: 0.5em;
    width: 100%;
}
footer {
    background: #f1f1f1;
    text-align: center;
    padding: 1em;
    margin-top: 2em;
}