6.13: Dropdowns Custom html example
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**Primary Actor**: User

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

**Goal**: Show user example how to add custom html to the dropdown items

Main success scenario:
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1. User opens Dropdowns demo page
2. User clicks on Custom html sub-menu
3. User see clickable button "Button dropdown"
4. When user clicks on this button, then dropdown opened and there are 3 items
5. Latest item in dropdown should have specific class

Variations:
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2*. User scroll to Custom html sub-menu