```css id="abc_css"
body {
    font-family: Arial, sans-serif;
    background: #f4f6f9;
}

#abc-form {
    max-width: 700px;
    margin: 40px auto;
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

#abc-form input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 6px;
}

button {
    background: #0b2d5c;
    color: white;
    padding: 12px;
    border: none;
    width: 100%;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background: #071d3a;
}

canvas {
    width: 100%;
    border: 2px dashed #0b2d5c;
    margin: 10px 0;
    border-radius: 6px;
}
```