How to Add Code Box in blogger post in Hindi

Css Code

@import url(https://fonts.googleapis.com/css?family=Open + Sans:400, 700);
a:link {
  text-decoration: none;
  outline: none;
  transition: all 0.25s;
}

a:visited,
a:link:hover,
a:visited:hover {
  text-decoration: none;
} 

HTML Code

<!--HTML-->
<div class="container">
  <h2>Demo and Download button</h2>
<div style="text-align: center;">
  <ul class="button">
    <li><a class="demo" href="#" target="_blank">Demo</a></li>
    <li><a class="download" href="#" target="_blank">Download</a></li>
  </ul>
</div>
</div>

JavaScript Code

<script async='async' src='https://www.googletagmanager.com/gtag/js?id=UA-115468134-11'/>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag(&#39;js&#39;, new Date());

  gtag(&#39;config&#39;, &#39;UA-115468134-11&#39;);
</script>