body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background: #007BFF;
    color: white;
    padding: 10px;
    text-align: center;
}

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

nav ul li {
    display: inline-block;
    position: relative;
}

nav a {
    padding: 10px 15px;
    color: white;
    text-decoration: none;
}

nav .dropdown {
    display: none;
    position: absolute;
    background: #0056b3;
    top: 100%;
    left: 0;
    z-index: 1000;
}

nav li:hover .dropdown {
    display: block;
}

main {
    padding: 20px;
}

article {
    margin-bottom: 20px;
}

footer {
    text-align: center;
    padding: 10px;
    background: #f4f4f4;
}

h2 a {
    color: #007BFF;
    text-decoration: none;
}