As of today, I intend to turn "column-span" on by default for all platforms in Firefox 71. It has been developed behind "layout.css.column-span.enabled" preference, and has been enabled on Nighly-only in bug 1423383.
*Summary: * The CSS column-span property, when its value is set to "all" makes an element span across all columns in the multi-column layout. *Bug to turn on by default: * https://bugzilla.mozilla.org/show_bug.cgi?id=1426010 *Meta bug where this feature is developed:* https://bugzilla.mozilla.org/show_bug.cgi?id=616436 *Standard:* https://www.w3.org/TR/css-multicol-1/#column-span *Platform coverage:* Like many other CSS features, column-span has support on all platforms. *DevTools bug:* None. Column-span doesn't require special support from the DevTools. *Other browsers: * According to caniuse.com, Chrome has shipped unprefixed column-span since Chrome 50 in 2016, and Safari has shipped this in Safari 9 since 2015. https://caniuse.com/#search=column-span *web-platform-tests: * Those tests with title "multicol-span-all-*" in multi-column test suite. https://github.com/web-platform-tests/wpt/tree/master/css/css-multicol *Secure contexts:* N/A *Note:* To support the development of column-span, the architecture of the multicol layout needs to be changed in a nontrivial way. If you see any bug, please one file under "Layout: Columns" component. Thanks! Ting-Yu Lin _______________________________________________ dev-platform mailing list email@example.com https://lists.mozilla.org/listinfo/dev-platform