body {
    font-family: Arial, sans-serif;
    margin: 20px;
    padding: 20px;
    background-color: #f4f4f4;
    text-align: center;
}

table {
    width: 80%;
    margin: 0 auto;
    border-collapse: collapse;
    background: white;
}

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

th {
    background-color: #007bff;
    color: white;
}

input {
    padding: 5px;
    width: 80%;
}

button {
    padding: 7px 15px;
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

#output {
    margin-top: 20px;
    text-align: left;
    white-space: pre-wrap;
    border: 1px solid #ddd;
    padding: 10px;
    width: 80%;
    margin: 0 auto;
    background: white;
}