What style of music do green day play?

Green Day is an American rock band that formed in 1986. They play a style of music that can be classified as pop punk, alternative rock, and punk rock. Green Day is known for their catchy melodies, energetic live performances, and political lyrics. Some of their most popular songs include "Basket Case", "She", "When I Come Around", and "Good Riddance (Time of Your Life)".