html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(160deg, #7dd3fc 0%, #86efac 45%, #fde68a 100%);
  font-family: 'Nunito', system-ui, sans-serif;
}
#wrap {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
#game {
  width: min(100vw, calc(100vh * 16 / 9));
  height: min(100vh, calc(100vw * 9 / 16));
  border: 5px solid #111;
  border-radius: 10px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
  overflow: hidden;
  background: #111;
}
#game canvas { display: block; width: 100% !important; height: 100% !important; }