body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #f7f7f7;
}

header {
    background-color: #222;
    color: white;
    padding: 20px;
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
}

nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 900px;
    margin: 20px auto;
    padding: 0 15px;
    background-color: white;
}

h1, h2, h3 {
    color: #818080;
}

section {
    margin-bottom: 30px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

table th, table td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: left;
}

table th {
    background-color: #eee;
}

img {
    max-width: 100%;
    height: auto;
}

footer {
    background-color: #222;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
}