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

header {
    background-color: #003366;
    color: white;
    padding: 20px;
    text-align: center;
}

nav {
    background-color: #0055aa;
    padding: 10px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

section {
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2 {
    color: #003366;
}

ul {
    list-style-type: disc;
    padding-left: 20px;
}

img {
    max-width: 100%;
    height: auto;
    margin: 20px 0;
}

footer {
    background-color: #003366;
    color: white;
    text-align: center;
    padding: 10px;
    position: relative;
    width: 100%;
    bottom: 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}