body {
    font-family: sans-serif;
    margin: 20px;
}

h1 {
    text-align: center;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.controls {
    margin-bottom: 20px;
}

.chart-container {
    width: 80%;
    max-width: 1000px;
}