Help:Columns

colbegin and colend
To create columns in an article one may use colbegin and colend. Note that this is not supported by Internet Explorer version 9 and below or Opera version 11 and below — see Div col for details. This example uses lorem to generate placeholder text.

produces:

You can also use col-begin, col-break, and col-end. But don't use this variety to set numbered or bulleted lists in columns, because col-break breaks the list up, which is a problem for accessibility.

As such:

creates

CSS
MediaWiki:Common.css defines the following styles:
 * "div.columns-2", "div.columns-3", "div.columns-4" and "div.columns-5" which need to contain a "div.column"

Templates

 * colbegin and divbegin – utilizes CSS3 features
 * Columns-start – defines CSS classes (see above)
 * col-begin – uses an HTML table (also adds a MULTICOL attribute)
 * col-begin-small
 * div col – uses CSS3
 * columns-list – uses CSS3

CSS3 multicolumn support
The templates div col and divbegin use a feature in CSS3 that is implemented in:
 * Gecko-based browsers, such as Firefox 1.5
 * Presto-based browsers, such as Opera 11.1
 * WebKit-based browsers, such as Safari (web browser) 3 and Google Chrome 1
 * MSHTML-based browsers, such as Internet Explorer 10