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README.md

Demo and API docs

##<iron-dropdown>

<iron-dropdown> is a generalized element that is useful when you have hidden content (.dropdown-content) that is revealed due to some change in state that should cause it to do so.

Note that this is a low-level element intended to be used as part of other composite elements that cause dropdowns to be revealed.

Examples of elements that might be implemented using an iron-dropdown include comboboxes, menubuttons, selects. The list goes on.

The <iron-dropdown> element exposes attributes that allow the position of the .dropdown-content relative to the .dropdown-trigger to be configured.

<iron-dropdown horizontal-align="right" vertical-align="top">
  <div class="dropdown-content">Hello!</div>
</iron-dropdown>

In the above example, the <div> with class .dropdown-content will be hidden until the dropdown element has opened set to true, or when the open method is called on the element.