These are old webkit-specific properties that allowed developers to fragment content over columns inside a scrollable region. See: Practically speaking this isn't used. Most developers use it accidentally, and typically when it is used this property to forces a new formatting context similar to setting "overflow: hidden".


For developers who wish to have fragmented content, a more standardized way to do this is with multi-column: See the previous example using this technique:,output For developers wishing to establish a new formatting context (to prevent margin-collapsing or similar), display: flow-root, or overflow: hidden both work. This feature isn't widely used, and maintaining it indefinitely will likely result it a maintenance burden.

Status in Chromium


Removed (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • Shipped/Shipping
  • No signals


Intent to Prototype url

Intent to Prototype thread

Search tags

css, overflow,

Last updated on 2020-11-19