I don't really understand what style is, and I need to find the style of "Casey at the Bat." Can someone help me?

First of all, style is a
literary term which describes the manner in which the story is being told. In the case
of "Casey at the Bat," the poem (or ballad) is a narrative being told by an unnamed
speaker, but obviously one who has great admiration for the slugging main character. The
theme is baseball, of course, and there are multiple references to the sport, including
many 19th century terms and allusions. The character of Casey is probably based on the
old baseball hero, Mike "King" Kelly, for which a famous song, "Slide, Kelly, Slide" was
written. The poem is written in rhyming verse separated into four-line stanzas with an
AABB rhyme scheme. Beginning in a realistic, somber tone, since the local Mudville nine
is losing and the outcome appears hopeless, it moves on to a hopeful and almost mythic
narrative once the local superstar Casey struts to the plate. There is great humor
within the lines, and the poem concludes with a highly ironic and totally unexpected
twist at the end.