body {
    margin: 0;padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #87CEEB;
    width: 100%;
    overflow-x: hidden;
    overflow-y: hidden;
    height: 200px;
}

canvas {
    border: 1px solid black;
    margin-top: 10px;
}