<div class="cursor">
    <div class="cursor__default">
      <span class="cursor__default__inner"></span>
    </div>
    <div class="cursor__trace">
      <span class="cursor__trace__inner"></span>
    </div>
  </div>
  <section class="header hidden-area">
    <h1 class="header__title">
      <div>Move </div>
      <div>Cursor</div>
    </h1>
  </section>

body {
  background-color: blue;
/*   overflow: hidden; */
}

.shown-area {
  display: none;
}

.header {
  position: relative;
  height: 100vh;
  width: 100%;
  overflow-x: hidden;
  overflow: hidden;
}

.header__title {
  position: absolute;
  top: 0;
  width: 100%;
  font-family: sans-serif;
  font-weight: 700;
  font-size: 7.5rem;
  line-height: 8.625rem;
  color: white;
  text-align: center;
}

  const header = document.querySelector(".header")

  header.addEventListener("mousemove", (e) => {
    const xRelativeToHeader = e.clientX / header.clientWidth
    const yRelativeToHeader = e.clientY / header.clientHeight

    document.querySelector(".header__title").style.transform = `translate(${(xRelativeToHeader * -50)}px, ${yRelativeToHeader * -50}px)`
  })