html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.canvas{
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 100%;
}
.canvas > canvas {
    border: 1px black solid;
}

#score {
    margin-left: 10px;
}