`PopupMenu` is a transient UI that displays a list of options. The popup appears from the view that it's anchored to and over other content. The popup will appear below the anchor view if there is room, or above it if there is not. The layout grows to fit the longest item in the list.

<DisplayToggle onText="Dark" offText="Light" label="Theme Switcher">
### Popup Menu with icons

<img className="off" src="https://static2.sharepointonline.com/files/fabric/fabric-website/images/controls/android/updated/img_popupmenu_01_large_light.png?text=LightMode" />
<img className="on" src="https://static2.sharepointonline.com/files/fabric/fabric-website/images/controls/android/updated/img_popupmenu_01_large_dark.png?text=DarkMode" />

### Popup Menu with Radio Buttons

<img className="off" src="https://static2.sharepointonline.com/files/fabric/fabric-website/images/controls/android/updated/img_popupmenu_02_small_light.png?text=LightMode" />
<img className="on" src="https://static2.sharepointonline.com/files/fabric/fabric-website/images/controls/android/updated/img_popupmenu_02_small_dark.png?text=DarkMode" />

### Popup Menu with Check Boxes

<img className="off" src="https://static2.sharepointonline.com/files/fabric/fabric-website/images/controls/android/updated/img_popupmenu_02_checkbox_light.png?text=LightMode" />
<img className="on" src="https://static2.sharepointonline.com/files/fabric/fabric-website/images/controls/android/updated/img_popupmenu_02_checkbox_dark.png?text=DarkMode" />
</DisplayToggle>
