html, body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

body {
  background: #222;
}

.canvas-bg-image {
  overflow: hidden;
  height: 100%;
  width: 100%;
}
.canvas-bg-image > div {
  background: url("https://static.canva.com/static/images/bg_tiles_color.2.jpg");
  background-size: cover;
  height: 100%;
  width: 100%;
  filter: blur(8px) brightness(0.8);
}