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HTML / CSS: The building blocks of every website

HTML and CSS are the foundation of the web. HTML gives your page structure (headings, paragraphs, buttons) and CSS makes it beautiful with colors, fonts, and…

Overview

HTML (HyperText Markup Language) defines what's on a web page — text, images, buttons, links. CSS (Cascading Style Sheets) controls how it looks — colors, sizes, fonts, and layout. Together, they're the universal language every browser understands. No installation required, no build tools — just open a file and go.

Core concepts

HTML tags: Tags like <h1>, <p>, <div>, and <button> tell the browser what kind of content each element is. CSS selectors & properties: Target HTML elements and apply styles: color, font-size, margin, padding, and hundreds more. Box model: Every element is a box with content, padding, border, and margin — understanding this unlocks layout. Live preview: Vibe Studio renders your HTML instantly in the Preview tab — no server needed.

When to use HTML / CSS

Simple, static websites without complex interactivity Learning web development basics Quick mockups and prototypes Email templates and landing pages

Quick-start tip

Edit index.html and watch it render instantly in the Preview tab — no build step needed. Try changing the background color or text to see changes live.