body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
    color: #2c3e50;
}

button {
    padding: 10px 20px;
    margin: 5px 0;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #2980b9;
}

a {
    text-decoration: none;
    color: #3498db;
    margin-right: 10px;
}

a:hover {
    text-decoration: underline;
}

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

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

table th {
    background-color: #3498db;
    color: #fff;
}