Markup CityISSUE #1 of 39

welcome to the markup

Tagg the BuilderVSThe Unclosed Tag

Tagg the Builder saysHTML is the skeleton of every web page — it labels content so the browser knows what each piece is.

HTML (HyperText Markup Language) isn't a programming language — it's a markup language. You don't write logic; you label content. A heading, a paragraph, an image, a link: each gets wrapped in a tag that tells the browser what it is.

Every website you've ever visited is, underneath the styling and interactivity, an HTML document. CSS makes it look good and JavaScript makes it move — but HTML is the foundation both build on. Learn it first and everything else has somewhere to stand.

Power-ups you unlock

HTML = structure & meaning · CSS = style · JS = behavior
It is markup, not programming — no variables, no loops
Browsers read HTML top-to-bottom and build the page from it
Every tag labels one piece of content

The Unclosed Tag attacks — common mistakes

Thinking HTML is a programming language — it describes, it does not compute
Reaching for CSS or JS before the HTML structure is sound
Forgetting the page is just a text file the browser interprets

Boss battleAdd a second <h1> and a <p> below the existing ones. Notice the browser happily renders both — HTML never crashes, it just shows what you give it.

Example code

<!doctype html>
<html>
<head><meta charset="utf-8"><title>my first page</title></head>
<body>
  <h1>Hello, web</h1>
  <p>This paragraph is real HTML. Edit me on the left.</p>
</body>
</html>

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What The Browser Actually Reads ›