<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <ul> <li> <label> <input type="radio" name="source" />Google</label> </li> <li> <label> <input type="radio" name="source" />Word of Mouth</label> </li> <li> <label> <input type="radio" name="source" />Other</label> </li> </ul>

/* radio button styling for checked input */ ul li input:checked { accent-color: #f806e4; } ul li:has(input:checked) { border: 2px solid #f806e4; }