body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background: #35424a;
    color: #ffffff;
    padding: 10px 0;
    text-align: center;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
}

#intro {
    background: url('background.jpg') no-repeat center center/cover;
    color: #ffffff;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

#intro .container {
    max-width: 800px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

h1, h2, h3 {
    margin-top: 0;
}

#products .product, #services ul {
    background: #ffffff;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

footer {
    background: #35424a;
    color: #ffffff;
    text-align: center;
    padding: 10px 0;
}