Scroll to target (element) with an adjustment or offset

scroll_to_target_adjusted.js

function scrollToTargetAdjusted(){
    var element = document.getElementById('targetElement');
    var headerOffset = 45;
    var elementPosition = element.getBoundingClientRect().top;
    var offsetPosition = elementPosition + window.pageYOffset - headerOffset;
  
    window.scrollTo({
         top: offsetPosition,
         behavior: "smooth"
    });
}