Template:Columns/Doc

Summary
This template constructs a multicolumn layout, with column width, column count, or preferably both specified.

Specified width, maximum count (recommended)
This constrains the number of columns in wide viewports, while preventing columns from getting too cramped in narrow viewports.

Specified width, auto count
Note that this generates many columns in wide viewports. If count cannot be given, display problems in wide viewports can be mitigated by specifying a larger width.

Specified count, auto width
Note that this generates narrow columns, and possibly horizontal overflow, in narrow viewports. If width cannot be given, display problems in narrow viewports can be mitigated by specifying a smaller count.