body {
    font-family: Arial;
    text-align: center;
    margin-top: 40px;
}

table {
    margin: auto;
    border-collapse: collapse;
    width: 100%;
    max-width: 900px;
}

th, td {
    border: 1px solid #ccc;
    padding: 10px;
    font-size: 16px;
    text-align: left;
}

th {
    background-color: #f4f4f4;
}

button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 16px;
}