text: const hero = document.querySelector(".hero");
  const text = hero.querySelector("h1");
  const walk = 100; // 100px
  
  function shadow(e) {
    const { offsetWidth: width, offsetHeight: height } = hero;
    let { offsetX: x, offsetY: y } = e;
  
    if (this !== e.target) {
      x = x + e.target.offsetLeft;
      y = y + e.target.offsetTop;
    }
  
    const xWalk = Math.round((x / width) * walk - walk / 2);
    const yWalk = Math.round((y / height) * walk - walk / 2);
  
    text.style.textShadow = `
        ${xWalk}px ${yWalk}px 0 rgba(255,0,255,0.7),
        ${xWalk * -1}px ${yWalk}px 0 rgba(0,255,255,0.7),
        ${yWalk}px ${xWalk * -1}px 0 rgba(0,255,0,0.7),
        ${yWalk * -1}px ${xWalk}px 0 rgba(0,0,255,0.7)
        `;
  }
  
  hero.addEventListener("mousemove", shadow);
  