body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header {
    background-color: #333;
    color: white;
    padding: 10px 20px;
}

header ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

header ul li {
    display: inline;
    margin-right: 20px;
}

header ul li a {
    color: white;
    text-decoration: none;
}

#hero {
    background-image: url('images/grenobles_logo.jpg');
    background-size: cover;
    color: white;
    padding: 100px 20px;
    text-align: center;
}

#about, #products {
    padding: 20px;
}

.product-list {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.product {
    width: 30%;
    margin: 10px;
    text-align: center;
}

.product img {
    max-width: 100%;
    height: auto;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 20px;
}