body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background: #f5f7fa;
}

.container {
    display: flex;
    gap: 20px;
}

textarea {
    width: 50%;
    height: 400px;
    font-family: monospace;
    font-size: 14px;
    white-space: pre;
    tab-size: 4;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

pre {
    width: 50%;
    height: 400px;
    overflow: auto;
    background: #fff;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-family: monospace;
    tab-size: 4;
}

button {
    margin-top: 10px;
    padding: 8px 12px;
    border: none;
    background: #4CAF50;
    color: white;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #45a049;
}