Writing style is a literary form that treats trivial matters in epic style?

You're describing a writing style called mock epic, or sometimes mock heroic.

Here's a breakdown:

* Epic style: Think of Homer's *The Iliad* or *The Odyssey*. Epic poetry is grand, formal, often using elevated language, and focuses on heroic deeds and significant events.

* Mock epic: This style takes the conventions of epic poetry and applies them to trivial or everyday situations. The result is often humorous, satirical, or even ironic.

Key characteristics:

* Elevated language: Mock epics often use formal language and poetic devices, even when discussing seemingly insignificant matters.

* Grandiose descriptions: They may exaggerate the importance of the subject, using elaborate metaphors and similes.

* Parody and satire: Mock epics often poke fun at societal norms, political figures, or even literary conventions themselves.

Famous examples:

* Alexander Pope's *The Rape of the Lock*: A humorous poem that uses epic style to describe a petty quarrel between a nobleman and a lady over a lock of her hair.

* Jonathan Swift's *The Battle of the Books*: A satirical work that uses mock epic to mock intellectual rivalries.

So, yes, writing style you described is indeed a literary form, and it's called mock epic!