body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    text-align: center;
    padding: 40px 20px;
}

h2 {
    font-size: 2em;
    margin-bottom: 10px;
    color: #2c3e50;
}

p {
    font-size: 1.1em;
    max-width: 600px;
    margin: 0 auto 30px auto;
    line-height: 1.6;
}

form {
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    display: inline-block;
    padding: 30px;
    width: 100%;
    max-width: 500px;
}

textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    font-size: 1em;
    border: 1px solid #ccc;
    border-radius: 6px;
    resize: vertical;
}

input[type="file"],
input[type="submit"] {
    margin-top: 15px;
    padding: 10px;
    font-size: 1em;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 100%;
    max-width: 300px;
}

input[type="submit"] {
    background-color: #2ecc71;
    color: white;
    font-weight: bold;
    cursor: pointer;
    border: none;
}

input[type="submit"]:hover {
    background-color: #27ae60;
}

pre {
    font-size: 1.2em;
    color: green;
    font-weight: bold;
}

canvas {
    margin-top: 20px;
    max-width: 600px;
    width: 100%;
}