<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="row">
<div class="col-md-6 offset-md-3 mt-5">
<div class="customcard">
<h4 class="text-center mt-2">Checkbox</h4>
<div class="form-group mt-4 gray-fill-checkbox form-check">
<input type="checkbox" id="customcheck1"/>
<label class="gray-fill-label" for="customcheck1">gray checkbox</label>
</div>
<div class="form-group mt-4 gray-circle-checkbox form-check">
<input type="checkbox" id="customcheck2">
<label class="gray-circle-label" for="customcheck2">gray circle checkbox</label>
</div>
<div class="form-group mt-4 border-fill-checkbox form-check">
<input type="checkbox" class="" id="customcheck3">
<label class="border-fill-label" for="customcheck3">border checkbox</label>
</div>
<div class="form-group mt-4 border-circle-checkbox form-check">
<input type="checkbox" class="" id="customcheck4">
<label class="border-circle-label" for="customcheck4">border checkbox</label>
</div>
<div class="form-group mt-4 bg-fill-checkbox form-check">
<input type="checkbox" id="customcheck5">
<label class="bg-fill-label" for="customcheck5">bgcolor checkbox</label>
</div>
<div class="form-group bg-cirle-checkbox mt-4 form-check">
<input type="checkbox" class="" id="customcheck6">
<label class="bg-cirle-label" for="customcheck6">bgcolor circle checkbox</label>
</div>
<div class="form-group mt-4 outline-fill-checkbox form-check">
<input type="checkbox" id="customcheck7">
<label class="outline-fill-label" for="customcheck7">Outline checkbox</label>
</div>