Emilie  Okumu

Emilie Okumu


How Relearning HTML Gave Me New Insights as a Web Developer

I’ve worked on websites for several years, both professionally and for side

projects. One day, I reflected on the fact that all of my web development

education had come from actually making websites. In most cases, I’d have a specific problem, Google how to solve it, and learn something new in the


I wondered what I was missing by never learning HTML in a comprehensive way. Forget CSS and JavaScript. I’m just talking about raw HTML. It might seem silly to go back to such a basic aspect of web development after a decent amount of experience, but it’s easy to become overconfident with a skill just because you know enough to do a few useful things.

So I decided to relearn HTML and discover my unknown unknowns.


For context, I made my first website in middle school for a class project. We

learned basic HTML, and embedding an MP3 song felt like magic. But I didn’t touch web development again until college. I made a lightweight news aggregator called The Daily Lore that’s still running (I preserved the original version).

Since then, I’ve worked on two websites professionally, one website for a

nonprofit, this personal website, and a few small websites for side projects, such as Make a README.

Introduction to HTML5

I don’t consider myself to be a web development expert based on just that

experience, but I surely had far more knowledge than the typical student for Coursera’s Introduction to HTML5 course. I started the course expecting to know a lot of the content already, since it was designed for complete beginners with no programming backgrounds.

As I went through the material, I did in fact know a lot of it already, but it was still a good refresher for two points in particular: the importance of using semantic elements and what to think about in terms of accessibility.

I’ve always had a bad habit of using generic

<div>elements to make what I need, rather than semantic elements that represent specific content, like theheaderandfooterelements.

Accessibility was also something I had never considered in depth. I knew that images should have alt descriptions, and that was about it. One of the course’s key points is that using the appropriate semantic elements is important to making a site more accessible.

For example, people who use screen readers can jump around using heading elements (

<h1>through<h6>), so it’s important to use them and make sure they’re in the correct order. It’s wrong to use them only to make text bigger because their real purpose is to define the structure of the content. They’re like a table of contents

Instead of headings, we could use

<p>elements and alter their font sizes with CSS to create a website that looks identical, but it’d be less semantic and less accessible. There is more to web development than making websites look the way we want. It’s important to make the content_mean_what we want as well.

Accessibility isn’t just about improving how websites work with screen readers. We should think about font size, font style, and color contrast for people who have visual impairments or color blindness. We should consider that people who have hearing loss may have a harder time recognizing that audio or video is playing. We should make tab navigation work well for people who rely primarily on the keyboard, perhaps because they have a difficult time using a mouse. When we add animations, we should take care to avoid ones that make it more difficult for someone to actually use the website, such as animations that change the page layout in the middle of interactions. And we should consider when a page is overloaded with too much information or too many elements, making it hard for people to understand things or how to actually use the website.

It’s easy to forget about accessibility, but we should strive to make websites work well for as many people as possible. Accessibility also goes hand in hand with usability and search engine optimization. The course points out that improving one frequently means improving all the others.


Reading the Documentation

I have a friend who is probably the only person I know who has read the entire NFL rulebook (the 2020 version is 87 pages long). Watching football with him was fun because he was so good at understanding nuances to the game and weird situations. I figured there was a similar opportunity for me with HTML.

The strict equivalent would have been to read the HTML standard for every HTML element, but I decided to read the MDN documentation for every element instead since MDN has a lot of information about browser compatibility and using elements in practice. I read the entire page for each element, took notes, and made Anki cards for the bits that I wanted to commit to memory.

There were many deprecated elements that I only skimmed through, and I didn’t bother to take notes for those, but dozens of standardized elements and attributes were totally new to me.

I didn’t intend to come out of this experience as a master of HTML, and I still have to apply what I’ve learned (including to this website), but I find it useful just to be aware of what is available. Even though I can’t recall all the details about using a picture element, I know it exists now, and I can always look up the details later during implementation. It’s a categorical difference from not being aware of it at all and using a plain

<img>for all cases because I don’t know any better.


As I read the documentation, some things were particularly interesting to me, and I had some observations.

The address element is for contact information in general, not just physical mailing addresses.

The definition element represents the term that is being defined, rather than the definition itself.

There is a whole set of ruby elements that are primarily used to show the pronunciations of East Asian characters.

The track element provides a standard way to embed timed text tracks for video and audio. I had never heard of the WebVTT (Web Video Text Tracks) format before.

The Future of HTML

As I read through the documentation, it kept making me consider the question of how HTML should evolve. Browsers keep gaining more and more functionality, to the point that they are becoming more like operating systems. There’s even an experimental API for connecting to Bluetooth devices.

Wikipedia is the perfect website for what HTML was originally designed for:

mostly static documents that are connected through hyperlinks. But now we use the browser to deliver full applications, like Figma, which is a design tool that effectively runs C++ code in the browser by compiling it to WebAssembly.

#html #html5 #learning #accessibility

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How Relearning HTML Gave Me New Insights as a Web Developer

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