Step-by-step explanation:
The Grich stole a big Christmas tree( from what I watched) but in a turn of events, the Grinch's heart grows—literally—as he realizes that his nefarious no-good doings didn't ruin Christmas; the citizens of Who-ville are still celebrating and still coming together in a show of goodwill. In that moment, the Grinch changes his mind (and his heart) when it comes to Christmas.
Theme of Transformation
what doctor seus want us to learn is that we should have the spirit of christmas.. we should be happy and not be sad..