body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-color: #f4f4f4;
}

h1 {
    color: #333;
}

.container {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 600px;
    width: 100%;
    margin-top: 20px;
}

.input-area {
    margin-bottom: 20px;
    text-align: center;
}

.input-area label {
    display: block;
    margin-bottom: 10px;
    font-size: 1.1em;
    color: #555;
}

.input-area input[type="file"] {
    margin-bottom: 15px;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.input-area button {
    padding: 10px 20px;
    background-color: #5cb85c;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s ease;
}

.input-area button:disabled {
    background-color: #dcdcdc;
    cursor: not-allowed;
}

.input-area button:not(:disabled):hover {
    background-color: #4cae4c;
}

.image-preview-area {
    text-align: center;
}

.image-preview-area img,
.image-preview-area canvas {
    max-width: 100%;
    height: auto;
    margin-top: 20px;
    border: 1px solid #ddd;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
}