# Dojocodinglabs Code Sensei Web Basics

> Web Basics — CodeSensei Teaching Module

- Skill: `tomevault-io/dojocodinglabs-code-sensei-web-basics` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/dojocodinglabs-code-sensei-web-basics`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/dojocodinglabs-code-sensei-web-basics/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/dojocodinglabs-code-sensei-web-basics

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# Web Basics — CodeSensei Teaching Module

## HTML
- **Analogy:** HTML is the skeleton of a webpage. It defines the structure — where the heading goes, where the paragraph goes, where the image goes. Like the blueprint of a house showing where rooms are.
- **Key insight:** HTML uses "tags" that come in pairs: `<tag>content</tag>`. The tag tells the browser what KIND of content it is.
- **Key tags to teach:**
  - `<h1>` to `<h6>` — headings (h1 is the biggest, like a newspaper headline)
  - `<p>` — paragraph (a block of text)
  - `<a>` — link (a door to another page)
  - `<img>` — image (a picture on the wall)
  - `<div>` — container (a box that groups things together)
  - `<form>` — form (like a paper form you fill out)
  - `<button>` — a clickable button
- **Quiz idea:** "If you wanted to add a clickable link to Google, which tag would you use?"

## CSS
- **Analogy:** CSS is the paint, wallpaper, and furniture of the house. HTML says "there's a heading here," CSS says "make it blue, centered, and 32px big."
- **Key insight:** CSS works by SELECTING an HTML element and then STYLING it. It's always: "who are you targeting?" + "what should they look like?"
- **Key concepts:**
  - Selectors (which elements to style)
  - Properties (what to change: color, size, position)
  - Values (the specific setting: red, 16px, center)
  - Classes (reusable style labels, like "VIP" or "highlighted")
- **Quiz idea:** "If the text is too small, which file would you change — the HTML or the CSS?"

## How Browsers Work
- **Analogy:** A browser is like a translator + artist. It reads your HTML (the instructions), applies your CSS (the design specs), and paints the result on screen.
- **Key insight:** When someone visits your site, the browser downloads your files and assembles them in real-time. That's why you see the page "load."
- **Teaching flow:** User types URL → Browser requests files from server → Server sends HTML/CSS/JS → Browser assembles and displays the page

## The Relationship
```
HTML = Structure (what's on the page)
CSS  = Style (how it looks)
JS   = Behavior (what it does)
```
Think of it as: HTML is the house frame, CSS is the interior design, JavaScript is the electricity and plumbing that makes things work.

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