Why Learn HTML, CSS, Javascript for Web Fundamentals

What makes every website tick—from Google search, Netflix’s streaming service, or even this very website?
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The answer to this question is the following 3 Technologies:
HTML, CSS, and JavaScript are the ABC's of programming, powering over 90% of the web (W3 Techs, 2025). They’re not just tools; they’re the foundation of everything online. There's a reason why Javascript, HTML, and CSS consistently make up the most popular programming languages as voted for by developers every year. Whether you’re a student eyeing a tech gig or just curious about coding, here’s why learning these fundamentals isn’t optional—it’s essential for anyone who wants in on the tech world.

HTML: The Backbone of Every Website

HTML, or HyperText Markup Language, is every web page and web site's starting point. It’s the structure behind every page—think of it as the bones or skeleton holding up a site. Without it, there’s no content to show, no links to click, no images to see. Every site, from Amazon.com to Codeclassroom, depends on HTML to exist! It's for this very reason that most Developers start their careers by learning HTML. After all HTML has powered the Web for majority of its lifespan! 
Skip HTML and you're locked out of web creation entirely!
The amazing thing is with ONLY HTML you can create a fully functioning web page or website! Even today, with the development of advanced programming languages and tools, there are still some sites that purely use HTML! A perfect example of this would be a website owned by one of the richest people on this earth, Warren Buffet! Just checkout the homepage of his multinational conglomerate, Berkshire Hathaway. You can see with only HTML there isn't really anything visually amazing or "modern" in the way that the website looks, but you might be surprised to know that this simple website still averages over 6 figures in monthly traffic! That's still much more traffic than many of the more modern websites!

So as you can see, with just HTML alone you'll be able to build a simple, yet fully functional website. So it should be no surprise that if you're aiming for a web-focused programming role, you can expect HTML to be required in nearly 80%+ entry-level job postings! 

CSS: An Essential Skill for Design

If you took a look at Berkshire Hathaway's website you probably thought—that's not really the website you envisioned yourself creating. That's because without CSS, or Cascading Style Sheets, a website won't have the decorative flourish and ornamentation that you expect from a modern-day website. CSS takes HTML's raw structure and adds style, colors, layout, and essentially creates a website or web page worth looking at. Without CSS, websites would all look like Berkshire Hathaway; just dull walls of text.

As a graduate of our Web Fundamentals Course once said:
"CSS turns a simple Website into something I'd actually use!"
CSS is not only essential for making a website visually look appealing, but also its pivotal for creating Responsive Designs, or essentially a website that works well on all devices. Today, with 55% of web traffic on phones (Statista, 2025), CSS’s knack for responsive design isn’t a nice-to-have—it’s critical.

Software Engineering Jobs want developers who can craft user-friendly, eye-catching sites. CSS skills mean you’re not just building—you’re shaping experiences that keep people clicking. It’s what takes bland text and turns it into a website with intuitive design and visuals that pop.

Javascript: The Most Popular Programming Language

As you saw in the Stack Overflow's 2024 Developer Survey, Javascript has consistently been ranked as the #1 Most popular Programming Language used by Developers in the industry, just above HTML and CSS. In fact it's actually held this title for over a decade with no end in sight.

Javascript is what gives a website life. It’s why buttons work, forms submit, and feeds refresh—like Instagram’s endless scroll. Without Javascript, sites are static; with it, they’re interactive and engaging. As a client-side programming language that runs on a whopping 98.8% of all websites, Javascript is a skill that employers hunt for—entry-level or not—because interactive sites keep users hooked.

Why’s it a must? JS bridges design and function. One line can update a page live or fetch data on the fly—think chat apps or stock trackers. Learn it, and you’re not just a coder; you’re a problem-solver with skills that scream “hire me.”

And the great thing is Javascript can be used both on the client-side and server-side which is just to say that whether you want to be a Web Developer, a Front-End Developer, a Back-End Developer, a Full-Stack Developer, or even a DevOps Engineer you'll be able to and most likely will need to understand Javascript!

The ABC's of Web Fundamentals

Whether you're testing the waters and want to see if Tech is right for you or you're trying to fully break through the Tech Industry; HTML, CSS, and JavaScript aren’t optional—they’re the web’s DNA. Every developer starts off learning them. They build, style, and animate every site you know, and they’re your gateway to a tech career. 

These skills open doors, with demand soaring (8% or 17,900 new projected web dev jobs yearly). Our 3-week Web Fundamentals course hands you the keys: real projects, live professional instruction, and a community to learn with. Build your first website with Codeclassroom—HTML for bones, CSS for flair, JS for life. Ready to start?

Master HTML, CSS, & Javascript in just 3 Weeks!