links.php

<!-- bootstrap css CDN included -->
<link
      rel="stylesheet"
      href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
      integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"
      crossorigin="anonymous"
    />
    <!-- fonts CDN included -->
    <link
      href="https://fonts.googleapis.com/css2?family=Epilogue&family=Roboto&display=swap"
      rel="stylesheet"
    />
    <!-- bootstrap js CDN included -->
    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" 
    integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" 
    crossorigin="anonymous">
    </script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" 
    integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" 
    crossorigin="anonymous">
    </script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" 
    integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" 
    crossorigin="anonymous">
    </script>

    <!-- font awesome kit link -->
    <script src="https://kit.fontawesome.com/7a15be51b1.js" crossorigin="anonymous"></script>