Recently I started to develop a web page on Github and created a blog. Today while posting a book review, I found that I couldn't embed an image. I am using kramdown syntax and using that I tried

Then again I directly used
<img class="img-responsive" src="../css/images/oneindiangirl.png"/>
and
<img src="../css/images/oneindiangirl.png" alt="One-Indian-Girl" class="inline"/>
and all of these three appeared as an image the way I expected. However, when I opened my webpage, the first and third one appeared as only alt text and the second link was a broken image. I am not getting where I am going wrong. Any help will be very much appreciated.
The _post repository could be found here and the corresponding website is here