"Warning! Firefox has buggy support for webcomponents and the Polymer project. If you encounter bugs, try using Chrome (recommended), Opera, Safari, Edge, or your phone instead — they'll all be faster, too."
All three of those browsers are proprietary and none of them are supported on CentOS 7.
Please do not use technology that requires proprietary browsers. It cuts many people off from access.
With respect to speed, I have found that is only a problem with poorly designed pages that use a ton of JavaScript to do things that should be done server-side where it often can be cached. Especially with the recent versions of FireFox.
What you are doing with webcomponents may be cool, but if it doesn't work with commonly used browsers, it isn't ready for production deployment.
The page https://ssarherps.org/cndb/ says:
"Warning! Firefox has buggy support for webcomponents and the Polymer project. If you encounter bugs, try using Chrome (recommended), Opera, Safari, Edge, or your phone instead — they'll all be faster, too."
All three of those browsers are proprietary and none of them are supported on CentOS 7.
Please do not use technology that requires proprietary browsers. It cuts many people off from access.
With respect to speed, I have found that is only a problem with poorly designed pages that use a ton of JavaScript to do things that should be done server-side where it often can be cached. Especially with the recent versions of FireFox.
What you are doing with webcomponents may be cool, but if it doesn't work with commonly used browsers, it isn't ready for production deployment.