/* 由构建脚本生成：GIF 转视频后的尺寸约束，对齐原有 img 规则 */
video.gifv {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: 640px;
  object-fit: contain;
  margin: auto;
  background: #1c1814;
  contain: paint;
}
body.ninja-guide .gifdemo video.gifv {
  max-height: 640px;
  object-fit: contain;
  display: block;
  margin: auto;
  background: #1c1814;
}
@media print {
  video.gifv { max-height: 180px; }
}