Answered: How I can hide the main page heading section for specific page?

Q2A assigns the class qa-template-question to question pages (the question list gets the class qa-template-questions with a trailing "s"), so you could do something like this in your stylesheet:

.qa-template-question .qa-main-heading {
  display: none;
}

That should also hide the favorite button, which is nested in the heading <div>.