item toggle button bootstrap 4 code example

Example: bootstrap buttons Toggle states

Add data-toggle="button" to toggle a button’s active state. If you’re 
pre-toggling a button, you must manually add the .active class and
aria-pressed="true" to the <button>.

<button type="button" class="btn btn-primary" data-toggle="button" aria-pressed="false">
  Single toggle
</button>