body {

    font-family: Arial, sans-serif;

    background-color: #f4f4f4;

    margin: 0;

    padding: 0;

    display: flex;

    justify-content: center;

    align-items: center;

    height: 100vh;

}



.container {

    width: 90%;

    max-width: 800px;

    background: #ffffff;

    padding: 20px;

    border-radius: 8px;

    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);

}



h1 {

    text-align: center;

    margin-bottom: 20px;

    font-size: 24px;

    color: #333;

}



.input-section,

.output-section {

    margin-bottom: 20px;

}



label {

    display: block;

    font-weight: bold;

    margin-bottom: 5px;

}



textarea {

    width: 100%;

    height: 150px;

    padding: 10px;

    font-family: monospace;

    font-size: 14px;

    border: 1px solid #ccc;

    border-radius: 4px;

    box-sizing: border-box;

    resize: none;

}



textarea[readonly] {

    background-color: #f9f9f9;

}



#error-message {

    margin-top: 5px;

    font-size: 14px;

    color: #f44336;

    height: 18px; /* Reserve space for error message */

}