document.addEventListener(“DOMContentLoaded”, function() {
var scrollLock = false; let runOnScroll = function(evt) { if(!scrollLock) { scrollLock = true; let img = document.getElementById("headerImg"); img.style.filter = "blur("+0.05*window.scrollY+"px)"; let header = document.getElementById("header"); header.style.backgroundColor = "rgba(04,09,17,"+0.003*window.scrollY+")"; scrollLock = false; } } window.addEventListener("scroll",runOnScroll);
});