style.css

* {
    margin: 0;
    box-sizing: boder-box;
  }
  .wrapper {
    height: 100vh;
    /* overflow-y: auto; */
    overflow-x: hidden;
    perspective: 20px;
  }
  
  header {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    transform-style: preserve-3d;
    z-index: -1;
    height: 100%;
  }
  
  .bg,.fg{
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .bg {
    transform: translateZ(-20px) scale(2);
  }

  .fg {
    transform: translateZ(-5px) scale(1.5);
  }

  h3 {
    padding: 10px;
    z-index: 1;
    /* color: white;
    text-shadow: 0 0 5px black; */
    font-size: 7rem;
    background: linear-gradient(to right, yellow, orange);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

    section {
    background: #333;
    color: white;
    padding: 10px 300px;
  }