If a local CSS file on a hosting is loaded in HEAD with an absolute URL, like https://example.com/style.css instead of relative /style.css, does it make a difference in terms of loading time?
More concretely asked: does an absolute URL here forces DNS resolving, SSL handshake and so on?
does it make a difference in terms of loading time?
It adds an insignificant number of bytes to the source code.
does an absolute URL here forces DNS resolving, SSL handshake and so on?
No. A relative URL is resolves to an absolute URL, then the rest of the request happens the same.