Remote permission denied in github while trying to push to origin
<p>I have started to contribute to a public repository on GitHub, but after I have created a pull request it says remote: Permission when I am trying to push another code to my origin. </p>

<blockquote>
  <p>remote: Permission to una/CSSgram.git denied to Pradhvan.<br> fatal:
  unable to access '<a href="https://github.com/una/CSSgram.git/" rel="nofollow">https://github.com/una/CSSgram.git/</a>': The requested
  URL returned error: 403</p>
</blockquote>