If you use my test page, as shown, you don't have to ask them. It will tell you.
I have edited my post to put the test page in red, in case you missed it.
Yes, that is a full and complete web page. Nothing more needs to be put on the page.
An optimist sees the glass as half full.
A pessimist sees the glass as half empty.
A realist drinks it no matter how much there is.