Integrate Prismjs with Hugo

I would like to integrate prism.js with my hugo website able to copy and paste clipboard for code blocks.Without prism I do no have any highlight issue as you can see below.

But when I enable prism, ı can able to copy clipboard but have some issue for highlight as below image.Seems css not working properly even if ı do not have any error. Any help appreciated.

This is how i included.

<!DOCTYPE html>
    <link href="https://{{cdn}}/prism@v1.x/themes/prism.css" rel="stylesheet" />
    <script src="/config/js/prism.js"></script>
    <script src="">. 
<script src=""></script>


# Highlighting config
pygmentsCodeFences = true
pygmentsUseClasses = false
pygmentsStyle = "tango"

prism_syntax_highlighting = true

      unsafe = true
      # See a complete list of available styles at
      style = "emacs"