Difference between direct css placement on pages and external calls

1. Reduce http requests
Adding additional http requests to external links is time-consuming.
2. Avoid bare pages
If the server storing css fails, the entire homepage will be suspended. It is safer to put it on the page. When a user accesses a page, it does not cause a bare page because css cannot be loaded.
3. Modification
You may say this is not easy to modify and manage.
In fact, they are all dynamically loaded by applications, and then cached static homepage.
I know so much about it now.

4. It is easy to modify the external layout, but if css cannot be loaded, it may lead to bare pages.

Generally, high-traffic websites place css directly on the page. This is an optimization solution to cope with high-traffic, such as NetEase homepage and Tencent homepage.