.riki-asteroids-wrap{
  width:100%;
  margin:0;
  padding:0;
}
.riki-asteroids-stage{
  position:relative;
  width:100%;
  height:72vh;
  min-height:520px;
  overflow:hidden;
  background:#000;
  color:#fff;
  font-family:monospace;
  user-select:none;
}
.riki-asteroids-canvas{
  display:block;
  width:100%;
  height:100%;
  background:#000;
  cursor:crosshair;
  touch-action:none;
}
.riki-asteroids-title,
.riki-asteroids-help{
  position:absolute;
  top:12px;
  z-index:3;
  pointer-events:none;
}
.riki-asteroids-title{
  left:14px;
  font:700 13px monospace;
  letter-spacing:.15em;
}
.riki-asteroids-help{
  right:14px;
  text-align:right;
  font:12px/1.45 monospace;
  opacity:.65;
}
@media(max-width:700px){
  .riki-asteroids-stage{height:68vh;min-height:420px}
  .riki-asteroids-title{font-size:11px}
  .riki-asteroids-help{font-size:10px}
}