Bradbury's style in "Fahrenheit 451" is very distinct. He uses a combination of both very simple language and beautiful figurative and poetic language. All throughout the book, to describe Montag's interactions with others, the language is simple, straightforward, and uncomplicated. But as he describes characters, scenes, and memories throughout the novel, he uses incredible poetic and figurative descriptions. Take for example the opening scene where he describes Montag at the fire; it says that Montag "strode in a swarm of fireflies," and that his hands
"were the hands of some amazing conductor playing all the symphonies of blazing and burning to bring down the tatters and charcoal ruins of history."
Bradbury later describes Clarrise in such terms: "her eyes were two miraculous bits of violet amber,"
"her face...was fragile milk crystal with a constant and soft light in it."
So, Bradbury usese this beautiful, descriptive language to describe different scenes and characters. But as his characters speak to each other, it is more simple, straight-forward, and perhaps suited to a society that has lost the use of delicate language through a lack of reading. So there is something special about the language he is using because it is very poetic.
I hope that those thoughts help a bit; I attached links below that might help you too. Good luck!