body {
    background-color: #eeeeee;
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

#canvasdiv {
    width: 100%;
    max-width: 1200px;
    margin-top: 40px;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

canvas {
    display: block;
    -webkit-tap-highlight-color: transparent; 
    cursor: pointer;
    max-width: 100%;
    height: auto;
}