Check if an element has non-root multi-column styles (column-count or column-width) set on its inline style.
NOTE: Do not use instanceof HTMLElement for the check because it does not work when the node is inside an iframe. (Issue #1000)
instanceof HTMLElement
Check if an element has non-root multi-column styles (column-count or column-width) set on its inline style.
NOTE: Do not use
instanceof HTMLElementfor the check because it does not work when the node is inside an iframe. (Issue #1000)