The Polymer library makes it easy to create your own web components. Give your element some markup and properties, and then use it on a site. Polymer provides features like dynamic templates and data binding to reduce the amount of boilerplate you need to write
Automatic representation of a _scalar_ value as [Polymer Elements](https://elements.polymer-project.org) (Iron and Paper) - in either read-only or editable mode.
`paper-dropdown` is a wrapper for `paper-dropdown-menu` to enable various features like multi-select, search / filter of items, key value pair and 2-way binding on value.