Ideal route to take to tweak the position of the iframe on the page? about firenvim HOT 2 OPEN

let commentField = document.getElementById("new_comment_field")

function clickHandler() {
  console.log("Clicked")

  let spanItem = document.querySelectorAll("span")
  console.log('Found spans: ' + spanItem.length);

  for (let i = 0; i < spanItem.length; i++) {
    if (spanItem[i].tabIndex === -1) {

      // Adding this was just for my own sanity, 
      // to make sure at least *something* was working
      spanItem[i].setAttribute("nvim", true)
      
      let frame = spanItem[i].querySelector('iframe');

      // Just a test to see what happens/if it works -
      // Spoiler: it doesn't -------------------------
      if (frame){
        let leftStyle = frame.style.left;
        frame.style.left = leftStyle + "50px"; 
      }

      // Operation not permitted, it seems
      // ---------------------------------
      const shadow = spanItem[i].attachShadow({
        mode: 'open',
        delegatesFocus: true
      });

      if (shadow) {
        console.log("Found shadow!")
        let frame = shadow.firstChild;
        if (frame) {
          console.log("Found frame!")
          frame.setAttribute("nvim", true)
        }
      }

      // Doesn't work either ---------------
      if (spanItem[i].shadowRoot) {
        console.log("Found shadow root!")
        let frame = spanItem[i].shadowRoot.querySelector('iframe');
        console.log('Found frame: ' + spanItem[i].shadowRoot.querySelector('iframe'));
        if (frame) {
          console.log("Found frame!")
          frame.addEventListener("load", function () {
            console.log("Loaded!");
            frame.setAttribute("nvim", true)
          });
        }
      }
    }
  }

  // Something I found on a forum, but it doesn't work either
  // waitForKeyElements("iframe, frame", function (elem) {
  //   console.log("Found iframe!")
  //   elem.addEventListener("load", function () {
  //     console.log("Loaded!");
  //     elem.setAttribute("nvim")
  //   });
  // });
}

// Detect when the mouse has been clicked within the comment field
if (commentField) {
  console.log("Found comment field")
  commentField.addEventListener("click", function () {
    setTimeout(clickHandler, 2000);
  }, false);
}