This snippet may be longer than normally written, but it contains the essentials for bootstrap style dropdowns.
Here’s a link
and here’s a button
and here’s a span
Scrolling
Now let’s see a really long dropdown that will scroll: Example
Form Controls
You can add form controls to your dropdowns: Example
With Icons
You can use CSS to add icons to your dropdowns: Example
Panels
Dropdowns can have regular HTML, too. Example
