* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
}
.normal-section img {
  width: 100%;
}

.wrapper {
  box-sizing: border-box;
  overflow: visible;
  position: relative;
}

.parallax-section {
  background-image: url('https://placecats.com/millie_neo/1920/1080');
  height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  position: relative;
  z-index: -1;
}