Apex domains cannot have CNAME records.
Question and response
Question
dig maximum.style. NS
Answer
maximum.style. 5 NS ns1.cloud-46265d.managed-vps.net.
maximum.style. 5 NS ns2.cloud-46265d.managed-vps.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0