--- layout: docs title: Button dropdown group: components --- Use any button to trigger a dropdown menu by placing it within a `.btn-group` and providing the proper dropdown menu markup. {% callout danger %} #### Plugin dependency Button dropdowns require the [dropdown plugin]({{ site.baseurl }}/components/dropdowns/) to be included in your version of Bootstrap. {% endcallout %} ## Contents * Will be replaced with the ToC, excluding the "Contents" header {:toc} ### Single button dropdowns Turn a button into a dropdown toggle with some basic markup changes.
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{% endhighlight %} ### Split button dropdowns Similarly, create split button dropdowns with the same markup changes, only with a separate button.
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{% endhighlight %} ### Sizing Button dropdowns work with buttons of all sizes.
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{% endhighlight %} ### Dropup variation Trigger dropdown menus above elements by adding `.dropup` to the parent.
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