How to reset httpd.conf to original form?

Question

Apache HTTP Server

Played around with the settings on the LAN and broke apache, or rather killed the config.
I can’t find the reason and I’m thinking of just resetting httpd.conf, but how can I do it?
It is surprising that the Apache starts and there is only a note in the logs:

[Tue Dec 08 16:33:56.582095 2015] [mpm_prefork:notice] [pid 2078] AH00170: caught SIGWINCH, shutting down gracefully

But when I try to open a local site, I get an error that the server is unavailable

Answer 1

Well, this is a text file, what does it mean to reset?
download Apache - take a config from it - it's probably considered default, isn't it?