My web doesn't appear after change DNS to Cloudflare

My web doesn’t appear after I change DNS to Cloudflare. I use other domain providers to Cloudflare to having SSL. My web uses GitHub hosting to put the data.

https://paste.pics/99cb4981235e2ae7d00f283f4c449d52
My settings in DNS Cloudflare.

https://paste.pics/eea657a6bd4db8e7bc86cf1060bb115e
My web doesn’t appear.

Please help me. Thank you.

My domain web is https://rezaprama.my.id

It’s certainly blank. Was your site working with HTTPS before you added it to Cloudflare?

My site was working before added it to Cloudflare in rezaprama.github.io

Can you explained what can I do for fix it?

For now, use the Overview page for your domain to Pause Cloudflare on Site and then wait five minutes for it to take effect. Then your domain will be in DNS Only mode so you can fix your settings to get Github to work with your domain and HTTPS.