What is the poet's style in the poem, One Art?

Bishop’s “One Art” follows the structure of a villanelle. The modern villanelle is a French verse form that can be traced as far back as 1606 and has a strict fixed form containing 19 lines comprised of five tercets followed by one quatrain. The individual lines of a villanelle are not bound by any particular meter or length, but the rhyme scheme is rigid: ABA for the tercets and ABAA for the quatrain. In addition, the villanelle hangs on two repeated refrains, the first appearing in lines 1, 6, 12, and 18 and the other in lines 3, 9, 15, and 19.