What does margin mean in css?

Margin in css is a shorthand attribute, which can set all margin attributes in one declaration; this shorthand attribute sets the width of all margins of an element, or sets the width of the margins on each side.

#The operating environment of this article: Windows 7 system, css3 version, Dell G3 computer.

margin shorthand property sets all margin properties in one declaration. This attribute can have 1 to 4 values.

Description

This shorthand property sets the width of all margins of an element, or sets the width of margins on each side.

The vertically adjacent margins of block-level elements will be merged, while inline elements will not actually occupy the top and bottom margins. The left and right margins of inline elements are not merged. Likewise, the margins of floated elements are not merged. It is allowed to specify negative margin values, but use caution when using them.

Note: Negative values ​​are allowed.

Example 1

margin:10px 5px 15px 20px;

The top margin is 10px

The right margin is 5px

The bottom margin is 15px

The left margin The margin is 20px

Example 2

margin:10px 5px 15px;

The top margin is 10px

The right and left margins are 5px

The bottom margin is 15px

Example 3

margin:10px 5px;

The top and bottom margins are 10px

The right and left margins are 5px

Example 4

margin:10px;

All 4 margins are 10px

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