<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 ----------> <div class="card shadow-sm border-0 mb-4"> <div class="card-body"> <h5 class="card-title">Commercial HVAC San Antonio | Mechanical Contractor of Texas</h5> <p class="card-text"> Expert <a href="https://mctpros.com/" target="_blank" rel="noopener noreferrer">Commercial HVAC</a> services for San Antonio businesses. Reliable commercial heating and cooling from certified technicians. </p> <a href="https://mctpros.com/" class="btn btn-primary">Learn More</a> </div> </div>