body {
    font-family: Arial, sans-serif;
    background-color: #222;
    color: #eee;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background-color: #333;
    border: 2px solid #ffcc00;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    max-width: 90%;
    width: 600px;
}

h1 {
    color: #ffcc00;
    margin-bottom: 20px;
}

h2 {
    color: #ffcc00;
    margin-bottom: 15px;
}

p {
    margin-bottom: 10px;
    line-height: 1.6;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    margin: 5px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

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

table, th, td {
    border: 1px solid #555;
}

th, td {
    padding: 8px;
    text-align: center;
}

tr:nth-child(even) {
    background-color: #444;
}

.section {
    margin-bottom: 20px;
}

#number {
    font-size: 2em;
    color: #ffcc00;
    font-weight: bold;
}