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This article mainly shows you "what are the properties of the css box model", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "what are the properties of the css box model" this article.

1. The content area is a necessary part of the box model.

There are three attributes: width, height, overflow (the scope contained by the width and height attributes determines which box model it is, explained in the end), and overflow specifies how to handle the overflow when the width or height of the content overflow area.

2. The inner margin refers to the space between the content area and the border.

There are five properties: padding-top, padding-bottom, padding-left, padding-right, and padding.

3. The outer margin refers to the distance between two boxes, which may be between the child element and the parent element, or between two sibling elements.

There are five attributes: margin-top, margin-bottom, margin-left, margin-right, and margin, which can be negative, that is, offset in the opposite direction.

When only a parent element exists, margin is relative to the parent element; when there is both a parent element and a sibling element, the element looks in four directions to see if there is a sibling element, and if there is a sibling element in this direction, the margin in this direction is relative to the sibling element, otherwise relative to the parent element.

4. Frame.

Similar to the border mentioned earlier.

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