same render style as github markdown page for a page on my jekyll site

I am using jekyll to generate my site and markdown files for creating posts.

I wrote markdown code to generate http://techtaste.in/blog/markdown/markdown-quick-reference.html. And I have used same content in https://github.com/Raghavendrak555/chari.github.io/blob/master/testMarkdown.md. These two pages render differently. Former one does not has syntax highlighted and latter one has.

What I can do to get the same sort of display for a markdown file in my site, same as it display in the github site.

Do I have to link any specific CSS file to achieve this or any config settings are needed in _config.yml.

Thanks in advance.