Flexbox

Since mw1.27, mixins for using flexbox in mw less files are available in mediawiki.mixins.less.

These support all browsers that implemented at least one of the specs, including IE10, but still require a fallback for those that don't implement anything (anything totally ancient, IE9-, etc). Just use some dumb floats or something and don't worry about responsiveness for those.

Mixins available:

Random example usage:

What's it do? Hell if I know.