body {
    margin: 0;
    padding: 0;
    background-color: #000; /* Black background for sparkline effect */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

main {
    width: 90%;
    max-width: 1200px;
    padding: 10px;
}

#realtime-graph {
    background-color: #000; /* Black canvas */
    border-radius: 4px;
    /* Ensures it scales nicely while maintaining aspect ratio */
    max-height: 80vh; 
    aspect-ratio: 16 / 9; 
}