render-canvas {
    width: 100%;
    height: 100%;
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    overflow: hidden;
}

render-canvas canvas {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid #c2c2c2;
    background-color: white;
}