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HomeHomework Helpweb-developmentCSS Box Model

CSS Box Model

A fundamental concept in CSS that describes the structure of an HTML element as a rectangular box, comprising content, padding, border, and margin, which can be manipulated using various CSS properties to control layout, spacing, and appearance

beginner
2 hours
Web Development
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Overview

The CSS Box Model is a crucial concept for web developers, as it defines how elements are structured on a webpage. Understanding the Box Model helps in creating visually appealing and well-structured layouts. It consists of four main components: content, padding, border, and margin, each serving a s...

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Key Terms

Content
The actual text, images, or other media within an element.

Example: The text inside a paragraph tag.

Padding
Space between the content and the border of an element.

Example: Padding of 10px adds space around the text inside a box.

Border
A line that surrounds the padding and content of an element.

Example: A solid black border around a div.

Margin
Space outside the border of an element, separating it from other elements.

Example: A margin of 20px creates space between two boxes.

Box-sizing
A CSS property that defines how the width and height of an element are calculated.

Example: Using box-sizing: border-box includes padding and border in the element's total width.

Margin Collapse
When vertical margins of adjacent elements combine into a single margin.

Example: Two adjacent paragraphs with 20px margins will have a 20px space between them.

Related Topics

CSS Flexbox
A layout model that allows for responsive design and alignment of elements.
intermediate
CSS Grid
A powerful layout system for creating complex web designs with rows and columns.
advanced
Responsive Web Design
Techniques for making web pages look good on all devices by adjusting layouts.
intermediate

Key Concepts

ContentPaddingBorderMargin