style.css

html,
body {
  background: #000;
  color: #fff;

  width: 100dvw;
  height: 100dvh;

  margin: 0;
  padding: 0;
}

#app {
  display: grid;
  place-items: center;
  width: 100dvw;
  height: 100dvh;
}

body {
  display: grid;
  place-items: center;
}

canvas {
  height: auto;
  width: 100%;
  aspect-ratio: 16 / 9;
  image-rendering: pixelated;
}

@media screen and (min-aspect-ratio: 16 / 9) {
  canvas {
    height: 100%;
    width: auto;
  }
}

.overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.25));
}

.play {
  margin: 5vh 10vh;
}

.play > circle {
  fill: none;
  stroke: #fff;
}

.play > path {
  fill: #fff;
}

#user-gesture {
  background: url("main-menu-bg.png");
  background-size: cover;
  background-position: right;
}  

.logo {
  width: 40vh;
  height: 40vh;
}

.text {
  font-size: 60px;
  border: 2px solid white;
  padding: 5px;
  width: 500px;
  text-align: center;
  margin: 20vh 0;
  cursor: pointer;
}