/* 文字转 GIF */
.tg-preview{display:flex;align-items:center;justify-content:center;padding:1rem;border:1px solid #eef1f5;
  border-radius:.625rem;background:repeating-conic-gradient(#f6f8fb 0% 25%, #ffffff 0% 50%) 50% / 16px 16px}
.tg-preview img{max-width:100%;height:auto;border:1px solid #e4e8ee;border-radius:.375rem;background:#fff}