Tell me why the <base> tag repeats the address of the site itself?
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
The tag description says, the address is used to indicate relative links. Why if the site address "http://joomla-site.com/menuitem/article" then the <base> tag also has an address "http://joomla-site.com/menuitem/article"? relative links of styles, scripts, and images don't work! What if the CMS is installed in a child folder of the domain "http://site.com/joomla/" here, in general, no relative link will work, scripts and styles with relative paths will not be loaded. When developing, I got out of the situation only with absolute paths. But not everything has to sculpt an absolute path?
<link href="/css/style.css" >
and
<script src="/js/script.js">
these paths should work even when the CMS is installed in a subfolder of the domain. http://site.com/joomla/ and the enabled seo mode should not be a hindrance to the operation of the site.. even the admin panel must have the same base address, since scripts and styles are used from the media folder of the application.

Originally posted by @korenevskiy in #31714