html,
body {
  min-width: 0;
  overscroll-behavior: none;
}

body.landscape-game {
  overflow: auto;
}

.landscape-notice {
  display: none;
}

.landscape-notice.notice-hidden {
  display: none;
}

@media (orientation: portrait) and (max-width: 900px) {
  body.landscape-game {
    position: relative;
  }

  .landscape-notice {
    display: block;
    position: fixed;
    z-index: 10000;
    top: 12px;
    left: 12px;
    right: 12px;
    padding: 10px 14px;
    color: #fff;
    background: rgba(20, 28, 38, .92);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 6px;
    font: 14px/1.5 Arial, sans-serif;
    text-align: center;
    pointer-events: none;
  }
}

@media (orientation: landscape) and (max-width: 1100px) {
  .landscape-game canvas {
    max-width: 100vw;
    max-height: 100vh;
  }
}