diff --git a/package.json b/package.json
index e05edcb..103b051 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,6 @@
     "eslint": "^6.8.0",
     "eslint-config-airbnb-base": "^14.1.0",
     "eslint-plugin-import": "^2.20.2",
-    "jest": "^25.2.7"
+    "jest": "^25.2.7"    
   }
 }
diff --git a/src/components/DivElement.js b/src/components/DivElement.js
index 7e22bcb..9944c05 100644
--- a/src/components/DivElement.js
+++ b/src/components/DivElement.js
@@ -1,5 +1,14 @@
 // Import HTMLElement here
+import HTMLElement from './HTMLElement';
 
 // Define class here
 
+class DivElement extends HTMLElement {
+  constructor(content) {
+    super('div', content);
+  }
+}
+
+
 // Export class here
+export { DivElement as default };
diff --git a/src/components/HTMLElement.js b/src/components/HTMLElement.js
index 559b785..11a7e38 100644
--- a/src/components/HTMLElement.js
+++ b/src/components/HTMLElement.js
@@ -1,4 +1,14 @@
 // Define class here
+class HTMLElement {
+  constructor(tag, content) {
+    this.tag = tag;
+    this.content = content;
+  }
+
+  render() {
+    return `<${this.tag}>${this.content}</${this.tag}>`;
+  }
+}
 
 // Export class here
-export default {};
+export { HTMLElement as default };
diff --git a/src/rolodex/rolodexPrinter.js b/src/rolodex/rolodexPrinter.js
index 0f12389..bf6accd 100644
--- a/src/rolodex/rolodexPrinter.js
+++ b/src/rolodex/rolodexPrinter.js
@@ -1,11 +1,8 @@
 import people from './people.json';
 
-people.forEach(function (person) {
-  const names = person.name.split(' ');
-  const firstName = names[0];
-  const lastName = names[1];
-  const email = person.email;
-  const phone = person.phone;
+people.forEach((person) => {
+  const [firstName, lastName] = person.name.split(' ');
+  const { email, phone } = person;
 
-  console.log('First name: ' + firstName + '\nLast name: ' + lastName + '\nEmail: ' + email + '\nPhone number: ' + phone + '\n');
+  console.log(`First name: ${firstName}\nLast name: ${lastName}\nEmail: ${email}\nPhone number: ${phone}\n`);
 });
diff --git a/src/timer/Timer.js b/src/timer/Timer.js
index 2453ed9..656c8ca 100644
--- a/src/timer/Timer.js
+++ b/src/timer/Timer.js
@@ -1,17 +1,19 @@
-function Timer(seconds) {
-  this.seconds = seconds;
-}
 
-Timer.prototype.start = function () {
-  var instance = this;
-  var timerInterval = setInterval(function () {
-    if (instance.seconds === 0) {
-      clearInterval(timerInterval);
-    }
+class Timer {
+  constructor(seconds) {
+    this.seconds = seconds;
+    console.log(this.seconds);
+  }
 
-    console.log(instance.seconds);
-    instance.seconds -= 1;
-  }, 1000);
-};
+  start() {
+    const timerInterval = setInterval(() => {
+      if (this.seconds === 0) {
+        clearInterval(timerInterval);
+      }
+      console.log(this.seconds);
+      this.seconds -= 1;
+    }, 0.0000001);
+  }
+}
 
 export default Timer;
diff --git a/src/timer/runTimer.js b/src/timer/runTimer.js
index 29db01e..cdb53e4 100644
--- a/src/timer/runTimer.js
+++ b/src/timer/runTimer.js
@@ -2,3 +2,4 @@ import Timer from './Timer';
 
 const countdown = new Timer(10);
 countdown.start();
+console.log(countdown);
diff --git a/test/DivElement.spec.js b/test/DivElement.spec.js
index f34069a..3aac7b4 100644
--- a/test/DivElement.spec.js
+++ b/test/DivElement.spec.js
@@ -9,6 +9,7 @@ describe('DivElement class', () => {
   });
 
   it('should be a class with the name DivElement', () => {
+    console.log(instance);
     expect(instance.constructor.name).toContain('DivElement');
   });