How to add pop-up tooltips in vaadin?

Vaadin 6 / 7 / 8 Framework UI
1

for example with css implementation:
http://jsbin.com/ajutil/1/edit

Best regards

2

component.setDescription(“Some nice tooltip”);

https://vaadin.com/book/-/page/components.features.html#figure.components.tooltip.richtext

3

Thanks, Vesa.
If I want the tooltips always show there, what component should I use then?