html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: rgb(188, 188, 188);
}

canvas {
  display: block;
}

#letter,
.echo {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: "Echo_2VF";
  font-size: 400px;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  transform-origin: center center;
  will-change: transform, opacity, filter, font-variation-settings;
  font-variation-settings: "wdth" 9;
}