Basic
<div class="form-check">
<input class="form-check-input" type="checkbox" id="ck1">
<label class="form-check-label" for="ck1">Receive newsletter</label>
</div>
Inline
<div class="form-check form-check-inline">...</div>
States
<input class="form-check-input" type="checkbox" disabled>
<input class="form-check-input" type="checkbox" checked>
Switches
<div class="form-check form-switch">...</div>