Tooltip

<button type="button" class="btn btn-sm btn-raised btn-raised-default" data-toggle="tooltip" data-placement="top" title="Tooltip on top">
  on top
</button>
<button type="button" class="btn btn-sm btn-raised btn-raised-default" data-toggle="tooltip" data-placement="right" title="Tooltip on right">
  on right
</button>
<button type="button" class="btn btn-sm btn-raised btn-raised-default" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">
  on bottom
</button>
<button type="button" class="btn btn-sm btn-raised btn-raised-default" data-toggle="tooltip" data-placement="left" title="Tooltip on left">
  on left
</button>