body, h1, h2, h3, p {
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}

main {
    padding: 20px;
}

h2 {
    color: #333;
    margin-bottom: 10px;
}

h3 {
    color: #555;
}

p {
    margin-bottom: 20px;
}

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

.home-button {
    display: inline-block;
    background-color: #555;
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
}

.home-button:hover {
    background-color: #777;
}

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

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

nav ul li a {
    display: inline-block;
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    background-color: #555;
    transition: background-color 0.3s;
}

nav ul li a:hover {
    background-color: #777;
}

section {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}