View source for Template:Div col/doc

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{{redirect-distinguish|Template:Colbegin|Template:Col-begin}}
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{{#ifeq:{{FULLPAGENAME}}|Template:Div col|{{High-use| 269676 }}|{{#ifeq:{{FULLPAGENAME}}|Template:Div col end|{{High-use| 209292 }}}}}}
{{CSS3 multiple column layout}}
{{Lua|Module:Check for unknown parameters}}
{{Uses TemplateStyles|Template:Div col/styles.css}}

The template '''{{tlf|div col}}''' (short for division columns) formats a list into columns that wrap at multiple screen resolutions responsively. It automatically breaks the available screen space into equal parts, meaning, for instance, that it is not necessary to guess how many columns to use and then figure out the dividing point(s), e.g., the halfway point to divide the list into two columns, or the one-third and two-thirds points to divide the list into three columns. To prevent a section of a list being broken, the template {{t|No col break}} can be used.

==Usage==
===Basic usage===
<syntaxhighlight lang="wikitext">
{{div col}}<!-- default width is 30em -->
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}

===Parameters===
There are six parameters for this template: 
; {{para|colwidth}}
: Specifies the minimum width of the columns so that the number of columns is automatically based on screen width (that is, more columns will be shown on wider displays). If no value is supplied, the template uses a default of 30em. The width can be specified in any [[CSS#Length units|CSS relative or absolute length unit]], for instance, the [[Em (typography)|em]] (about the width of the capital "M" of the displayed typeface), e.g., <code>colwidth=20em</code>. 
; {{para|rules|yes}}
: Adds vertical lines ("rules") between the columns if set to <code>yes</code>. 
; {{para|gap}}
: Specifies the space between the content of adjacent columns, in any valid CSS width unit, e.g., <code>gap=2em</code>. The default spacing (set by browser) is 1em.
; {{para|class}}
: An HTML class, or multiple space-delimited classes, to apply to the columns.
; {{para|style}}
: [[Cascading Style Sheets|CSS styling]] to apply to the columns.
; {{para|small|yes}}
: Sets font size to 90%.
; {{para|content}}
: Content to apply to the columns. This parameter is effectively equivalent to {{tl|columns-list}}, which is a pass-through for this template.

===Examples===
====Colwidth====
;Fixed width
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em}} <!-- column width of 10em -->
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10em}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
;Variable width
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10vw}} <!-- column width of 10% of the viewable area or container-->
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10vw}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}

====Rules====
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em|rules=yes}} <!-- column width of 10em with rules -->
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10em|rules=yes}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}

====Gap====
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em|rules=yes|gap=2em}} <!-- column width of 10em with rules and a gap of 2em -->
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10em|rules=yes|gap=2em}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}

====Small====
<syntaxhighlight lang="wikitext">
{{div col|small=yes}} <!-- Small = yes -->
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col|small=yes}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}

====Content====
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em|content= <!-- content parameter doesn't need {{div col end}} -->
* a
* b
* c
* d
* e
* f
* g
* h
}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10em|content=
* a
* b
* c
* d
* e
* f
* g
* h
}}

====Multiple parameters====
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em|rules=yes|gap=2em|small=yes}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10em|rules=yes|gap=2em|small=yes}}
* a
* b
* c
* d
* e
* f
* g
* h
{{div col end}}

====Text characters without list markup====
<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em}} <!--Text characters without list markup -->
a
b
c
d
e
f
g
h
{{div col end}}
</syntaxhighlight>
Produces
{{div col|colwidth=10em}}
a
b
c
d
e
f
g
h
{{div col end}}

====Lorem ipsum====
<syntaxhighlight lang="wikitext">
{{div col}} <!--Lorem ipsum -->
{{lorem ipsum}}
{{div col end}}
</syntaxhighlight>
Produces
{{div col}}
{{lorem ipsum}}
{{div col end}}

== Limitation ==
=== Sub-lists ===
The underlying CSS system is unable to break sub-lists into columns. Note the uneven formatting below:

<syntaxhighlight lang="wikitext">
{{div col|colwidth=10em|rules=yes|gap=2em|style=column-count:3|content=
* a
* b
* c
** c.d
** c.e
** c.f
* g
* h
}}
</syntaxhighlight>
Produces:
{{div col|colwidth=10em|rules=yes|gap=2em|style=column-count:3|content=
* a
* b
* c
** c.d
** c.e
** c.f
* g
* h
}}

Turning off the {{code|break-inside: avoid-column;}} rule appears to help.<!-- A full page refersh is needed; just F12-ing doesn't work. -->

=== Chrome-based browsers can separate images from captions===
In certain circumstances, Chrome-based browsers can separate images from their captions, placing the caption in the next column. This bug was reported in 2018 as {{phab|T193163}}, and it appears to be a bug in Chromium, [https://issues.chromium.org/issues/40578413 tracked as issue 40578413].

==Tracking categories==
* {{category link with count|Pages using div col with unknown parameters}} (for erroneous use of parameter names not documented here)
* {{category link with count|Pages using div col with small parameter}}

==TemplateData==
{{TemplateData header}}
{{#switch: {{BASEPAGENAME}}
|Div col=<templatedata>
{
	"description": "Breaks a list into columns. It automatically breaks each column to an equal space, so you do not manually have to find the half way point on two columns. The list is provided by |content= or closed with {{div col end}}.",
	"params": {
		"colwidth": {
			"label": "Column width",
			"description": "Specifies the width of columns, and determines dynamically the number of columns based on screen width; more columns will be shown on wider displays.",
			"type": "string",
			"example": "22em",
			"default": "30em"
		},
		"rules": {
			"label": "Rules",
			"description": "Produces vertical rules between the columns if set to yes.",
			"type": "string",
			"example": "yes"
		},
		"gap": {
			"label": "Gap size",
			"description": "Specifies the space between the content of adjacent columns.",
			"type": "string",
			"example": "2em"
		},
		"class": {
			"label": "HTML class",
			"description": "Specifies any class or multiple space-delimited classes.",
			"type": "string",
			"example": "plainlist nowrap"
		},
		"style": {
			"label": "CSS style",
			"description": "Specifies any custom styling.",
			"type": "string"
		},
		"content": {
			"label": "Content",
			"description": "Specifies the content to divide into columns",
			"type": "content"
		},
		"small": {
			"label": "Small font",
			"description": "Use a smaller font size (90%)",
			"example": "yes",
			"type": "string"
		}
	}
}
</templatedata>
|Div col end=<templatedata>
{
    "description": "Ends a multi-column list started by {{div col}}. It takes no parameters.",
    "params": {
    }
}
</templatedata>
}}

==Redirects==
{{#ifeq:{{PAGENAME}}|Div col/doc|Redirects to {{tl|div col}}:}}
{{#ifeq:{{ROOTPAGENAME}}|Div col|
* {{tlx|col div}}
* {{tlx|colbegin}} (but '''not''' {{tlx|col begin}} or {{tlx|col-begin}})
* {{tlx|cols}}
* {{tlx|div col start}}
* {{tlx|div col begin}}
* {{tlx|div-col}}
* {{tlx|palmares start}}
}}<!-- 
 -->{{#ifeq:{{PAGENAME}}|Div col/doc|<nowiki />
Redirects to {{tl|Div col end}}:}}<!-- 
 -->{{#switch:{{PAGENAME}}|Div col end|Div col/doc=
*{{tlx|col div end}}
*{{tlx|colend}} (but '''not''' {{tlx|Col end}})
*{{tlx|div end}}
*{{tlx|Divcol-end}}
*{{tlx|Divcolend}}
*{{tlx|Divend}}
*{{tlx|End div col}}
*{{tlx|EndDivCol}}
*{{tlx|End of solid block}}
}}

==See also==
* {{tl|refbegin}} and {{tl|refend}} (for columns in manual lists of references)
{{column-generating template families}}

<includeonly>{{Sandbox other|
| <!-- CATEGORIES BELOW THIS LINE, PLEASE: -->
[[Category:Multi-column templates]]
[[Category:Templates that add a tracking category]]
<!--?:-->{{#switch:{{PAGENAME}} |div col= |div col end=}}
}}</includeonly>