Done

index.js

@@ -1 +1,24 @@
 
+function getFirstSelector(selector) {
+  return document.querySelector(selector);
+}
+
+function nestedTarget() {
+  return document.querySelector('#nested .target');
+}
+
+function increaseRankBy(n) {
+  let rankedList = document.querySelectorAll('.ranked-list li');
+
+
+  for (let i = 0; i < rankedList.length; i++) {
+    rankedList[i].innerHTML = parseInt(rankedList[i].innerHTML) + n;
+  }
+
+}
+
+function deepestChild() {
+  let items = document.querySelectorAll("#grand-node *");
+  return items[items.length - 1];
+
+}