body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f4f4f4;
}

h2 {
    margin-bottom: 15px;
}

#svgArea {
    width: 300px;
    height: 200px;
    border: 2px solid #333;
    background-color: white;
    margin-bottom: 20px;
}

circle {
    fill: steelblue;
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}