Steps to reproduce:

1. Configure REPO:

• • baseurl = http://repo.zabbix.com/zabbix/4.0/rhel/7/$basearch/

1. Try to install package zabbix-web without package httpd (apache2)
2. fail

Result:
--> Finished Dependency Resolution
Error: Package: zabbix-web-4.0.10-1.el7.noarch (zabbix)
           Requires: httpd
Error: Package: php-5.4.16-46.el7.x86_64 (base)
           Requires: httpd
Error: Package: php-5.4.16-46.el7.x86_64 (base)
           Requires: httpd-mmn = 20120211x8664
 You could try using --skip-broken to work around the problem...
Expected:
No dependency on httpd if you're installing for example with nginx webserver.