message: Use pixel instead of rem to work better in other platforms.
diff: .vega-embed {
  position: relative;
  display: inline-block;
  - padding-right: 2.4rem;
  + padding-right: 38px;
  }
  .vega-embed .vega-actions-wrapper {
  position: absolute;
  top: 0;
  right: 0;
  - padding: 0.4rem;
  + padding: 6px;
  opacity: 0.2;
  background: white;
  display: none;
  flex-direction: column;
  - padding-bottom: 0.5rem;
  - padding-top: 0.5rem;
  - border-radius: 0.25rem;
  + padding-bottom: 8px;
  + padding-top: 8px;
  + border-radius: 4px;
  box-shadow: 0 2px 8px 0 rgba(0, 0, 0, 0.2);
  border: 1px solid #d9d9d9;
  background: white;
  }
  .vega-embed .vega-actions a {
  - padding: 0.5rem 1rem;
  + padding: 8px 16px;
  font-family: sans-serif;
  - font-size: 0.875rem;
  + font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: #434a56;
  