html,
body {
  height: 100%;
  position: relative;
}

.main {
  height: 100%;
  width: 100%;
  overflow: hidden;
  position: absolute;
}

.main .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.main .container .bg {
  background-image: url('./logo.png');
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  margin: 0 16px;
  z-index: 1;
  width: 100%;
  height: 64px;
}

.canvas {
  z-index: 0;
  position: absolute;
  top: 0;
  left: 0;
}