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This article is to share with you about the basic positioning mechanism in CSS. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

CSS has three basic positioning mechanisms: normal stream, floating and absolute positioning.

Unless specifically specified, all boxes are positioned in the normal stream. That is, the position of an element in a normal stream is determined by its position in the (X) HTML.

Block-level boxes are arranged one after another from top to bottom, and the vertical distance between the boxes is calculated by the vertical outer margin of the box.

The inline box is arranged horizontally in a row. You can adjust their spacing using horizontal inner margins, borders, and outer margins. However, the vertical inner margin, border, and outer margin do not affect the height of the inline box. A horizontal box formed by a row is called a Line Box, and the row box is always high enough to accommodate all the inline boxes it contains. However, setting the row height can increase the height of this box.

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