.canvasLoader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    background-color: rgba(247, 247, 247, .5);
}

body > .canvasLoader {
    position: fixed;
}

.canvasLoader div {
    position: absolute;
    left: 50%;
    top: 50%;
}

.canvasLoader canvas {
    display: block;
}