What is the style of novel The Diary Anne Frank?

The Diary of Anne Frank is written in the form of a diary entries, letters and short stories, from June 14, 1942 to August 1, 1944. The writing is intimate, personal and spontaneous. Anne's style of writing in her diary is honest, innocent, and candid, expressing her thoughts, emotions, and experiences in great detail. It allows the reader to deeply connect with Anne as an individual, understanding her perspectives and feelings throughout the course of her life in the Secret Annex.