.part-1 {
  overflow: hidden;
}

.part-1 .bg-img {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 70%;
  transform: translate3d(-50%, 0, 0);
  z-index: 0;
  transition: all 0.2s;
}

.part-1 .part-content {
  position: relative;
  z-index: 5;
  width: 92%;
  margin-left: auto;
  margin-right: auto;
  transition: all 0.2s;
}

@media screen and (max-width: 991px) {
  .part-1 .bg-img {
    width: 100%;
  }

  .part-1 .part-content {
    width: 100%;
  }
}