spective: 1;</code> to the column container. This creates a new stacking context for the container, and apparently causes Chrome to (re)calculate column layout.</p>
      </blockquote>

      <p>That hack created a <a href="https://github.com/readium/css/issues/117">performance issue for large HTML documents</a> as a side-effect though, and it was consequently removed in version 2, especially as it was no longer needed.</p>

      <p>Blink/Chromium switched to their new LayoutNG for columns in version <code