body {
    font-family: Arial, sans-serif;
    background-color: rgb(0, 140, 255); 
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
    padding: 20px;
}   
div, canvas {
    background-color: white; 
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 10px;
}
div {
    margin-bottom: 10px;
}
canvas {
    border: 1px solid #ccc;
    width: 60vw; 
    height: 70vh; 
}