What are the core frontend skills?

The three core skills are HTML for structure, CSS for styling, and JavaScript for interactivity, plus responsive design and accessibility.

What is responsive design?

Responsive design makes web pages adapt their layout to look good on any screen size, from phones to desktops, often using CSS media queries.

Beginner🖼️ 20 slides⏱ 4 minWeb Development

🎨 Frontend Development

Frontend development builds the part of a website users see and interact with. This visual guide covers HTML, CSS, JavaScript, responsive design, accessibility, frameworks, and the tools that turn designs into working interfaces.

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What Is Frontend Development?

Building the part of a site users see and use.

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The Three Core Skills

HTML, CSS, and JavaScript.

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HTML: Structure

Defines page content and layout.

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CSS: Style

Controls colors, spacing, and design.

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JavaScript: Behavior

Adds interactivity and logic.

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The Box Model

Margins, borders, padding, and content.

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Flexbox and Grid

Modern layout systems.

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Responsive Design

Adapt layouts to every screen size.

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Media Queries

Apply styles per breakpoint.

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The DOM

JavaScript reads and updates the page.

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Events

Respond to clicks, input, and scrolls.

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Fetching Data

Call APIs and update the UI.

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Accessibility (a11y)

Make sites usable for everyone.

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Semantic HTML

Meaningful tags aid SEO and screen readers.

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Performance

Fast pages keep users and rank better.

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Frameworks

React, Vue, and Angular speed up complex UIs.

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Build Tools

Bundlers compile and optimize code.

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Version Control

Git tracks your frontend code.

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Browser Dev Tools

Inspect and debug in the browser.

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Getting Started

Build a responsive page with HTML, CSS, and JS.

Frequently Asked Questions

Frontend development is building the visible, interactive part of a website using HTML, CSS, and JavaScript that users see and interact with in the browser.