CSS on Add new order on admin

[zitu4life]

Hello 

Greeting!

I am trying to   remove\hide   add domain  on   Add Order page, but can not complete it alone. I have used following CSS

a.btn.btn-default.btn-sm.adddomain {display: none !important;}

and also  use   overrides languages to   remove

Domain Registration
$_ADMINLANG['domains']['domainreg'] = "";

 

If i apply css  to remove picture below  it mess  everything, perhaps   I am using wrong code.

Is that possible   to   hide it all with just one hook?

 

 

[zitu4life]

I guess   the code is 

table.form.tbl-domain-config{display: none !important;}

 

[brian!]

#domains, #domainContactContainer, a.btn.btn-default.btn-sm.adddomain {display: none !important;}