body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0 20px;
    background: #f9f9f9;
}

header h1 {
    color: #333;
}

nav a {
    margin-right: 10px;
    text-decoration: none;
    color: #0066cc;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: #fff;
}

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

table th {
    background: #f0f0f0;
}

button, a.button {
    display: inline-block;
    padding: 5px 12px;
    background: #28a745;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
}

button:hover, a.button:hover {
    background: #218838;
}