The old site was available at - https://nikinath.github.io/. However, luckily the Github username I wanted was available and I changed my username.
So now the website points to: https://nikhita.github.io/.
Prior to building the new website, I was using the Lanyon theme. I have written two detailed tutorials about how I had made the blog using Lanyon. They turned out to be quite useful while rebuilding the site! Here they are for your quick reference: