body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #1a1a1a;
    color: #fff;
    padding: 20px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

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

nav ul li a:hover {
    color: #ffcc00;
}

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

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

h2, h3 {
    color: #1a1a1a;
}

ul, ol {
    margin: 20px 0;
    padding-left: 20px;
}

dl dt {
    font-weight: bold;
    margin-top: 10px;
}

dl dd {
    margin-bottom: 10px;
}

a {
    color: #0066cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    background-color: #1a1a1a;
    color: #fff;
    text-align: center;
    padding: 10px;
    margin-top: 20px;
}

footer nav ul li a {
    color: #fff;
}

.download-button {
    background-color: #ffcc00 !important;
    color: #1a1a1a !important;
    padding: 10px 20px !important;
    font-weight: bold !important;
    border-radius: 5px !important;
    display: inline-block !important;
    margin-top: 10px !important;
    text-decoration: none !important;
}

.download-button:hover {
    background-color: #e6b800 !important;
    text-decoration: none !important;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th, table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

table th {
    background-color: #f2f2f2;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8em;
    }
    nav ul li {
        display: block;
        margin: 10px 0;
    }
}