Bootstrap class: .btn-group (nested)

Do not have time to learn all the Bootstrap classes?

Try drag & drop Bootstrap builder

<div class="btn-group" role="group" aria-label="Button group with nested dropdown">
  <button type="button" class="btn btn-secondary">1</button>
  <button type="button" class="btn btn-secondary">2</button>

  <div class="btn-group" role="group">
    <button id="btnGroupDrop1" type="button"
            class="btn btn-secondary dropdown-toggle"
            data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    <div class="dropdown-menu" aria-labelledby="btnGroupDrop1">
      <a class="dropdown-item" href="#">Dropdown link</a>
      <a class="dropdown-item" href="#">Dropdown link</a>


More in Bootstrap Button Groups