HTML and CSS Computer Science Fundamentals

Do you want to learn the core tools for web development? HTML and CSS are essential for every web developer or design to know.

Do you want to learn the core tools for web development? HTML and CSS are essential for every web developer or design to know. Learn how to use a code editor and set up a website. Use HTML tags to build all elements of your webpage. Build different sections of the website, including a navigation menu, header and more!

Learn to use CSS to style your webpage with colors, positioning, sizing and more. Build a responsive layout that adapts to different screen sizes, including mobile and desktop. Customize the fonts and shapes on your web app. And much more! Enroll now to begin your web developer journey.


Join 1.6 million+ students in high-quality courses featured at Harvard

  • Lifetime access that never expires
  • Project-based curriculum to superboost your portfolio
  • Graduation certificate for every course
  • Absolute beginner-friendly
  • All source files provided

Student Reviews from the Community

Captivating voice, easy to follow at a rapid pace, get some paper and fasten your seat-belts. I'm enjoying every second of this.

— Philip Murray

Great learning experience! Thanks a lot for explaining each and every concept step by step and very clearly. Indeed, I appreciate the way of teaching.

— Sumeet Varma

Your Instructor


Alexandra Kropf
Alexandra Kropf

Alexandra Kropf is Mammoth Interactive's CLO and a software developer with extensive experience in full-stack web development, app development and game development. She has helped produce courses for Mammoth Interactive since 2016, including the Coding Interview series in Java, JavaScript, C++, C#, Python and Swift.

Mammoth Interactive is a leading online course provider in everything from learning to code to becoming a YouTube star. Mammoth Interactive courses have been featured on Harvard’s edX, Business Insider and more.

Over 12 years, Mammoth Interactive has built a global student community with 4 million courses sold. Mammoth Interactive has released over 350 courses and 3,500 hours of video content.

Founder and CEO John Bura has been programming since 1997 and teaching since 2002. John has created top-selling applications for iOS, Xbox and more. John also runs SaaS company Devonian Apps, building efficiency-minded software for technology workers like you.


Course Curriculum


  01 Build Your First Website with HTML in 1 Hour
Available in days
days after you enroll
  02 Style Your First Website with CSS in 1 Hour
Available in days
days after you enroll

Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.

Get started now!