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

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


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

nav li {
    margin: 0 10px;
}

nav a {
    color: #fff;
    text-decoration: none;
}

main {
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

h1, h2 {
    text-align: center;
    margin-bottom: 20px;
}

p {
    line-height: 1.5;
    margin-bottom: 20px;
}

a {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    display: inline-block;
}

a:hover {
    background-color: #555;
}

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