shows Notification on button

can anyone please help me.

I need to show the notification number on button. Like we see on this form page on bell symbol.

I have search a lot but I didn’t got satisfied anuswer.

thanks in advance.
Pankaj

You can see a similar thing in the Dashboar demo (top right corner of the app):
http://demo.vaadin.com/dashboard/#!dashboard

Source:
Java:
https://github.com/vaadin/dashboard-demo/blob/master/src/main/java/com/vaadin/demo/dashboard/view/dashboard/DashboardView.java#L361-392

CSS:
https://github.com/vaadin/dashboard-demo/blob/master/src/main/webapp/VAADIN/themes/dashboard/common.scss#L85-99

Jouni Koivuviita:
You can see a similar thing in the Dashboar demo (top right corner of the app): http://demo.vaadin.com/dashboard/#!dashboard

Source:
Java: https://github.com/vaadin/dashboard-demo/blob/master/src/main/java/com/vaadin/demo/dashboard/view/dashboard/DashboardView.java#L361-392
CSS: https://github.com/vaadin/dashboard-demo/blob/master/src/main/webapp/VAADIN/themes/dashboard/common.scss#L85-99

→ Vaadin 8.1.3