HTML:Ex:Getbootstrap.com/components/Button dropdowns/Dropup variation

   <button type="button" class="btn btn-default">Dropup</button>
   <button type="button" class="btn btn-default dropdown-toggle"
       data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
     
     Toggle Dropdown
   </button>

• <a href="#">Action</a>
• <a href="#">Another action</a>
• <a href="#">Something else here</a>
• <a href="#">Separated link</a>

   <button type="button" class="btn btn-primary">Right dropup</button>
   <button type="button" class="btn btn-primary dropdown-toggle"
       data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
     
     Toggle Dropdown
   </button>

• <a href="#">Action</a>
• <a href="#">Another action</a>
• <a href="#">Something else here</a>
• <a href="#">Separated link</a>