The easiest way to make your Project available via HTTPS on its custom domain is with Cloudflare, which has a free tier that provides HTTPS.
Cloudflare requires you to change your nameservers to point to them. Meaning that the DNS records are then handled on the Cloudflare side. When you’re setting up the site in Cloudflare, you’ll need to make sure those A records point to the CodePen IP Addresses 184.108.40.206 and 220.127.116.11.
It’s up to you to only use secure resources to keep that “Secure” light green!
- If you’re using Amazon’s Route53, you’ll need to change your NS records in the hosted zone and at the domain level.