Hello,
I think I made a progress.
I disabled QUIC.cloud CDN and Cloudflare API in LiteSpeed > CDN, then purged the caches.
I waited about 20 minutes and the layout’s no longer messy on most browser. It’s still broken on some but they probably need sometime.
I am still trying to understand how QUIC.cloud CDN and Cloudflare API can cause broken layout. But, I just relieve that the layout works as I want it.
Thank you for the tip @rodicaelena.
I want to wait before updating this question as resolved. Just in case something else happens or if someone can offer explanation about the CDN settings.
Doni.