What is the web box model

The web box model means that in web design, the web page element is regarded as a rectangular box, including four parts: content, inner margin, border and outer margin. This concept is one of the foundations of CSS. , used to describe and control the layout and style of web page elements on the page. Its characteristic is that the width and height of each box are determined by the sum of content, padding, border and margin. It is widely used and can be used to achieve various web page layout and style effects. By adjusting the width, height, padding, border, margin and other properties of the box, different layout effects can be achieved.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

The Web box model means that in web design, the web page element is regarded as a rectangular box, containing four parts: content, inner margin, border and outer margin. This concept is one of the foundations of CSS (Cascading Style Sheets), which is used to describe and control the layout and style of web elements on the page.

The Web box model consists of the following parts:

1. Content: the content actually displayed in the box, such as text, pictures, etc. The size of the content is determined by the box's width and height properties.

2. Padding: The blank area between the content and the border, used to control the distance between the content and the border. The size of the padding is determined by the padding attribute.

3. Border: The border of the box, used to surround the content and padding. The style, width, and color of the border are determined by the border attribute.

4. Margin: The blank area between the box and other elements, used to control the distance between the box and other elements. The size of the margin is determined by the margin attribute.

The characteristic of the Web box model is that the width and height of each box are determined by the sum of the content, padding, border and margin. For example, if the width of a box is set to 200px, with a padding of 20px, a border of 2px, and a margin of 10px, the actual width of the box on the page will be 200px 20px 2px 10px = 232px.

The Web box model is widely used and can be used to achieve various web page layout and style effects. By adjusting the width, height, padding, border, and margin properties of the box, you can achieve different layout effects, such as centered alignment, multi-column layout, responsive layout, etc.

In CSS, you can use box model-related properties to control and adjust the style of the box. For example, you can use the width and height properties to set the width and height of the box, the padding property to set the padding, the border property to set the border, and the margin property to set the outer margins.

In short, the Web box model is an important concept in web design. By treating web page elements as a rectangular box, web content can be more flexibly controlled and laid out to achieve rich and diverse web effects.

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