Access-list for network ID address?

I have an access-list like this:

access-list 100 deny ip 192.168.12.192 0.0.0.15 any

Access-list 100 permit ip any any

As my understand that the Access-list will just deny the addresses from 192.168.12.193 -> 192.168.12.207 (included broadcast)

But when I test with a host 192.168.12.192/24, the Access-list also denies this host. Please explain why it happens, thanks for reading.