Hey there. In 2017 all sites should provide valid SSL. Since your site is hosted on GitHub Pages via a CNAME there are multiple options: - Use [Cloudflare](https://www.cloudflare.com) to easily get SSL onto your domain while still hosting on GitHub Pages - Use [Netlify](https://www.netlify.com/) to automatically deploy from GitHub to their awesome CDN with SSL - Use https://maxogden.github.io/javascript-for-cats without the TLD