html,body{
  margin:0;
  height:100%;
  background:#000;
  color:#fff;
  font-family:monospace;
  display:flex;
  align-items:center;
  justify-content:center;
}
#game{
  position:relative;
}
canvas{
  image-rendering:pixelated;
  width:512px;
  height:512px;
  background:#000;
  display:block;
}
#hud{
  position:absolute;
  left:0;
  right:0;
  bottom:-32px;
  height:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:14px;
  padding:0 8px;
  box-sizing:border-box;
}
#lives .life{
  display:inline-block;
  width:10px;
  height:10px;
  background:#d00;
  border-radius:50%;
  margin-right:3px;
  border:1px solid #800;
}
#info span{margin-right:12px;}
#score{font-weight:bold;letter-spacing:1px;}
#overlay{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  background:rgba(0,0,0,0.85);
  text-align:center;
  pointer-events:none;
}
#overlay.active{pointer-events:auto;}
#overlay h1{font-size:28px;margin:0 0 12px;}
#overlay p{margin:4px 0;}