The box model is one of the fundamental concepts in CSS that every web developer must understand. The dimensions of the boxes, also known as "box model" in English, determine how the size and position of elements on a web page is calculated and represented.
What is the box model?
The box model describes how elements are structured and sized in CSS. Each element on a web page is considered a rectangular box made up of four main areas: the content, padding, border and margin.
He content is the area that contains the text or any other type of information displayed within the element. He stuffed is the space between the contents and the edge of the box. He edge is the line surrounding the content and padding. And the margin is the space between the edge of the box and adjacent elements.
The box model is of great importance in the design and layout of a web page, since it allows you to control the size and position of the elements precisely.
Box dimensions
The dimensions of the boxes are defined using CSS properties like width y height. These properties determine the size of the contents of the box.
It is important to note that when defining the dimensions of a box, they do not include the padding, border, or margin. By default, the size of a box is calculated solely from the contents. However, it is possible to include the size of these areas using the properties box-sizing y padding.
The property box-sizing Allows you to control how the total size of a box is calculated. The value content-box (default) indicates that the box size is calculated from the contents only, not including padding or border. The value border-box, on the other hand, makes the box size include the padding and border in the calculation.
The property padding is used to set the padding size of a box. It can be specified individually for each side (e.g. padding-top o padding-left), or using the shorthand property padding.
Conclusion
The box model in CSS is essential to understanding how elements on a web page are structured and sized. Through dimension properties, such as width y height, and control properties, such as box-sizing y padding, we can create flexible and adaptable designs.
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Frequently asked questions
1. What is the box model in CSS?
The box model describes how elements are structured and sized in CSS, dividing them into content, padding, border, and margin areas.
2. How are the dimensions of a box defined in CSS?
The dimensions of a box are defined using properties such as width y height.
3. How do you control the total size of a box?
The total size of a box is controlled using the property box-sizing, which can have the values content-box o border-box.
4. How do you set the padding size of a box?
The padding size of a box is set using the property padding.
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