.section4{
    position: relative;
    transform: translateY(150px);
    opacity: 0;
    transition: 1.2s all ease;
  }

  .section4.active {
    transform: translateY(0);
    opacity: 1;
  }
  .section3{
    position: relative;
    transform: translateY(150px);
    opacity: 0;
    transition: 1.2s all ease;
  }

  .section3.active {
    transform: translateY(0);
    opacity: 1;
  }.section2{
    position: relative;
    transform: translateY(150px);
    opacity: 0;
    transition: 1.2s all ease;
  }

  .section2.active {
    transform: translateY(0);
    opacity: 1;
  }