body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}
.container {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 500px;
}
h1 {
    color: #333;
    text-align: center;
}
p {
    color: #666;
    text-align: center;
}
input[type="file"] {
    display: block;
    margin: 20px auto;
}
button {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}
button:hover {
    background-color: #0056b3;
}
#result {
    margin-top: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 4px;
    display: none;
}
#outputText {
    white-space: pre-wrap;
    word-break: break-word;
}