safing-web/_includes/foot.html

<script type="text/javascript">
  // fix content on mobile browsers that change vh if the top bar disappears
  function ready(fn) {
    if (document.attachEvent ? document.readyState === "complete" : document.readyState !== "loading"){
      fn();
    } else {
      document.addEventListener('DOMContentLoaded', fn);
    }
  }

  var lastWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth

  function bannerResize() {
    var h = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight
    document.getElementById("banner-background").style.height = h + "px"
    document.getElementById("banner-transition").style.height = h + "px"
    document.getElementById("banner-content").style.height = Math.floor(h*1.1) + "px"
  }

  function bannerResizer() {
    // fix content on mobile browsers that change vh if the top bar disappears
    var w = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth
    if (w != lastWidth) {
      lastWidth = w
      bannerResize()
    }
  }

  function scrollToPM(event){
    event.preventDefault()
    document.getElementById("portmaster").scrollIntoView({
      behavior: 'smooth'
    })
  }

  ready(function(){
    window.addEventListener("resize", bannerResizer);
    bannerResize()

    document.getElementById("learnmore-button").addEventListener("click", scrollToPM)
    document.getElementById("learnmore-icon").addEventListener("click", scrollToPM)
  })
</script>