body {
    font-family: Arial, sans-serif;
    background: #f5f6fa;
    margin: 0;
}

.container {
    width: 90%;
    max-width: 900px;
    margin: 50px auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
}

h1 {
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th,
table td {
    border: 1px solid #ddd;
    padding: 12px;
}

table th {
    background: #2563eb;
    color: white;
}

.btn {
    display: inline-block;
    background: #16a34a;
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
}

.btn:hover {
    background: #15803d;
}