Prefixed CSS multi-column properties have been removed


Categories: CSS

Releases: Firefox 74, Firefox 78 ESR


The support for the following -moz-prefixed multi-column properties, deprecated since Firefox 52, has been removed with Firefox 74. Use the standard, unprefixed equivalents instead.

  • -moz-columns
  • -moz-column-count
  • -moz-column-fill
  • -moz-column-gap
  • -moz-column-rule
  • -moz-column-rule-width
  • -moz-column-rule-style
  • -moz-column-rule-color
  • -moz-column-span
  • -moz-column-width

How can I test this?

This change can be tested with the compatibilty checker in our Firefox Developer Tools extension. Get it today!