body {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #eaeaea;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

h1 {
    margin: 20px 0;
}

.controls {
    margin-bottom: 10px;
    display: flex;
    gap: 10px;
}

input, button {
    padding: 5px 10px;
    font-size: 14px;
    border-radius: 5px;
    border: 1px solid #333;
}

button {
    background: #4CAF50;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #45a049;
}

canvas {
    border: 3px solid #333;
    background: #fff;
    cursor: grab;
}

p {
    margin: 10px 0;
    font-size: 14px;
    color: #333;
}