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A, if all four parameter values are provided, the upper, right, bottom, and left orders are used for four edges.
B. If only one is provided, it will be used for all four edges.
C, if provided two, the first for the upper, lower, the second for the left and right.
D, if three are provided, the first one is used on, the second one is for left, right, and the third for the next.
D, inline objects can use this property to set the left and right side of the outer patch; To set up an outer patch on the upper and lower sides, you must first make the object appear as a block-level or inline block-level.
F, the epitaxial margin is always transparent.
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CSS's Margin property