6.2: Dropdowns Trigger by tag \<a> example
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**Primary Actor**: User

**Scope**: Ngx-bootstrap DEMO / BS version 3&4

**Goal**: Show user example with link dropdowns

Main success scenario:
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1. User opens Dropdowns demo page
2. User clicks on Trigger by tag \<a> sub-menu
3. User see clickable link
4. When user clicks on it, then dropdown opened and there are 3 items
5. When user clicks on any item, then dropdown closes

Variations:
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2*. User scroll to Trigger by tag \<a> sub-menu