3 `iron-collapse` creates a collapsible block of content. By default, the content
4 will be collapsed. Use `opened` or `toggle()` to show/hide the content.
7 <button on-click="toggle">toggle collapse</button>
9 <iron-collapse id="collapse">
10 <div>Content goes here...</div>
16 this.$.collapse.toggle();
20 `iron-collapse` adjusts the height/width of the collapsible element to show/hide
21 the content. So avoid putting padding/margin/border on the collapsible directly,
22 and instead put a div inside and style that.
28 border: 1px solid #dedede;
33 <div class="collapse-content">
34 <div>Content goes here...</div>