Tooltip
Show a tooltip on hover using the data-tooltip attribute.
Tooltips only appear on devices that support hover. On touch screens, consider using a different pattern to surface this information.
Default
<button data-tooltip="Add to library">Hover</button>Placement
Use data-placement to control which side the tooltip
appears on. Defaults to top.
<button data-tooltip="Top" data-placement="top">Top</button>
<button data-tooltip="Bottom" data-placement="bottom">Bottom</button>
<button data-tooltip="Left" data-placement="left">Left</button>
<button data-tooltip="Right" data-placement="right">Right</button>