.preview-canvas {
  display: block;
  position: relative;
  min-height: 420px;
  max-height: 720px;
  overflow: auto;
  background: #fff;
}

.preview-canvas > div {
  margin: auto;
}

.preview-fallback {
  display: block;
  width: 100%;
  height: auto;
  min-height: 340px;
  max-height: 650px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafb;
}

.preview-fallback.hidden,
.preview-canvas.hidden {
  display: none;
}