*, *:before, *:after{
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
html, body {
  width: 100vw;
  height: 100vh;
}
body{
  background: linear-gradient(
      180deg,
      #2b2b39,
      #202430
  );
  font-family: 'Poppins',sans-serif;
  font-weight: 400;
  font-size: 15px;
}
main {
  height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
}
canvas {
  width: 100vw;
  height: 66vw;
}
@media (min-aspect-ratio: 3/2) {
  canvas {
    height: 100vh;
    width: 150vh;
  }
}
canvas.hidden {
  display: none;
}
#levels {
  display: none;
}
button {
  box-sizing: border-box;
  height: 4em;
  padding: 0 2em;

  background-color: #00c2b4;
  border-radius: 2em;
  border: 0;

  color: white;
  font-size: 1.5em;
  font-family: Arial;
}