body,
html {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: #000;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  border: 0vmin solid black;
  max-width: calc(100% - 0vmin);
  max-height: calc(100% - 0vmin);
  display: block;
  margin-left: auto;
  margin-right: auto;
  background-color: #000;
}

div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  color: white;
  font-size: 2em;
  font-family: Arial, sans-serif;
  text-align: center;
}

p {
  font-size: 1rem;
  color: transparent;
  user-select: none;
}