Block Facebook on Windows computers?

Question

Facebook

How to make it so that the Facebook site does not open on Windows computers
In the system32/drivers/etc folder, I added a line to the hosts file:
127.0.0.1 facebook.com
and the site still continues to open
PS It was possible to block other sites in this way, but how does facebook.com "leak"?

Answer 1

facebook.com added but www.facebook.com not? here it opens, and there is also m.facebook.com
In some browsers there is a setting to use your own dns server, and not specified in the system, this can also affect.