html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#e8eddf}body{display:flex;justify-content:center}#game-frame{border:0;display:block;width:min(100%,540px);height:100%;height:100dvh;box-shadow:0 0 90px #29472a20}.return-to-pond{position:fixed;left:20px;top:20px;z-index:100;color:#3b5434;background:#f8f9ee;border:1px solid #c6d0b7;border-radius:6px;padding:10px 15px;text-decoration:none;font:12px 'Microsoft YaHei',sans-serif}.return-to-pond:focus-visible{outline:3px solid #b68142;outline-offset:3px}@media(max-width:650px){.return-to-pond{display:none}}