body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f9;
    color: #333;
}
header {
    background-color: #0066cc;
    color: white;
    text-align: center;
    padding: 15px 0;
}
header h1 {
    margin: 0;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 15px;
}
nav ul li a {
    color: white;
    text-decoration: none;
}
main {
    padding: 20px;
}
.hero {
    text-align: center;
    background-color: #eaf4ff;
    padding: 30px 20px;
}
.hero .btn {
    background-color: #0066cc;
    color: white;
    padding: 10px 15px;
    text-decoration: none;
    border-radius: 5px;
    display: inline-block;
    margin-top: 15px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
table th, table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: center;
}
table th {
    background-color: #0066cc;
    color: white;
}