{{Collapse bottom}} should always be placed on its own line.
Parameters
This template takes the following parameters, all of which are optional.
They are case-sensitive.
Those that take CSS measurements require them in CSS format (e.g. 1em not 1 em).
|1=(or first unnamed parameter), |title=, |reason=, |header=, |heading=
Will give the collapsed box a title, which occurs on the same line as the show link and is always visible. It defaults to "Extended content".
For example, {{Collapse top|title=This is the title text}} or {{Collapse top|This is the title text}}. Note: The shorter, unnamed markup will not work if the title value contain an equals (=) character.
|warning=yes
Will display a default warning line under the main title which reads "The following is a closed debate. Please do not modify it."
Any non-empty value supplied to this parameter will have this effect (i.e. |warning= will not work as expected).
|2=(or second unnamed parameter)
This is optional warning-line text. It will override the standard warning line above; it is not necessary to also use |warning=yes in this case, though doing so is harmless.
|left=yes
Will align the title along the left margin (in RTL languages, along the right margin instead).
By default, text is centered, specifically between the left edge of the green box and the left edge of the "show" link.
Any non-empty value supplied to this parameter will have this effect (i.e. |left= will not work as expected).
|expand=yes
Will leave the material uncollapsed with the border and coloring. Default is to collapse the material.
Any non-empty value supplied to this parameter will have this effect (i.e. |expand= will not work as expected).
|bg=
Sets the background color of the title of the collapsible bar. Defaults to #F8FCFFTemplate:Color-sample, a whitish color. Named colors are listed at List of colors.
For example, {{Collapse top|This is the title text|bg=#008000}} or {{Collapse top|This is the title text|bg=green}} (numeric HTML color codes require the leading #).
|fc=
Sets the font color of the title of the collapsible bar. Defaults to "black".
See |bg=, above, for details on color options.
|border=
Sets the width of the border line on the collapsed material. Defaults to 1px.
For example, {{Collapse top|border=2px}}; going much thicker than this is not very useful.
Sets the padding (distance from borders) on the collapsed material inside the colored area. Defaults to 8px.
|width=
Sets the width of the overall template relative to the page (or a block element containing the collapse box). This should virtually always be given as a percentage, e.g. |width=50%, or in relative em units, e.g. |width=30em. Pixel-based values should be avoided, as they are effectively meaningless – the result will be different depending on each user's browser and local CSS settings (which browser and operating system it is, zoom level, font sizes, etc.).
|border2=
Sets the properties of the border of the box that appears when template is expanded. Defaults to 1px silver (there is no provision to change from a solid line).
For example, {{Collapse top|border2=2px}} (only width or color will be changed if only one value is supplied).
See |bg=, above, for details on color options.
|bg2=
Sets the background color of the box that appears when template is expanded; defaults to white (#FFF).
See |bg=, above, for details on color options.
|indent=
Indents the box from the left of the page. Defaults to no indentation. Each : in talk page markup is approximately equivalent to 1.6em of indent (e.g., to match :::: indentation level, use |indent=6.4em). You can also use a percentage value.
Pixel-based values should be avoided (see |width=, above, for the reason).
Examples
Adding a box title (if omitted, default is "Extended content") – <syntaxhighlight lang="wikitext" inline>
.svg){kind=link}