.section2 {
  width: 100%;
}
.section2 .part1 {
  width: 100%;
  height: 35.2rem;
}
.section2 .part2 {
  width: 100%;
  height: 15.88rem;
}
.section2 .part3 {
  width: 100%;
  height: 26.6rem;
}
.section2 .part4 {
  width: 100%;
  height: 16.16rem;
}