body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

h1 {
    text-align: center;
    color: #333;
}

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

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

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

button {
    padding: 5px 10px;
    border: none;
    background: #27ae60;
    color: #fff;
    cursor: pointer;
}

button:hover {
    background: #2ecc71;
}