<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 ----------> In a fall restraint system prevent the worker from the hazards. When working is right at the edge of the rooftop and repairing something, therefore fall arrest system should be used. If you are working at the center of the roof the risk is completely falling off is relatively low the <a href="https://caisafety.com">fall restraint system</a> is the right choice over there. To know more about it, visit CAIsafety website now.