bottom margin

基本解释

Most block-level elements have a bottom margin of 20px.
绝大多数块级别的元素的底部边距为20px。
Notice how the top margin of the second paragraph is extended vertically to meet the bottom margin of the previous paragraph.
请注意第二个段落的上边框是如何垂直扩展以便与前一段落的底边框相接的。
On the vertical dimension, we distribute extra space in a ratio of (1, 4, 2) corresponding to (top margin, button itself, bottom margin).
在垂直方向上，按照与（上边距，按钮本身，下边距）对应的（1，4，2）的比例分配额外空间。

Not exactly--Nortel was looking at shedding the low-margin bottom of its optical-components business, saving the jazziest lines for itself.
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None is a true bottom-line margin that relates profits to sales after deducting all costs, including the opportunity cost of equity capital.
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However, our gross margin and bottom line have been impacted by worse than anticipated market conditions and inventory provisions.
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