What does collapsed margins mean?
Collapsing margins happen when two vertical margins come in contact with one another. If one margin is greater than the other, then that margin overrides the other, leaving one margin. It’s like the bigger margin straight up ate the other one and left nothing behind.
What does margin-top mean?
The margin-top CSS property sets the margin area on the top of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
How do I stop my margins collapsing?
Using a padding or border will prevent collapse only in the latter case. Also, any value of overflow different from its default ( visible ) applied to the parent will prevent collapse. Thus, both overflow: auto and overflow: hidden will have the same effect.
Why does margin collapse happen?
Margin collapsing occurs in three basic cases: If there is no border, padding, inline content, height , or min-height to separate a block’s margin-top from its margin-bottom , then its top and bottom margins collapse.
What are the differences between collapsing margins and border collapse?
They are Different! The border-collapse CSS property determines whether a table’s borders are separated or collapsed. In the separated model, adjacent cells each have their own distinct borders. In the collapsed model, adjacent table cells share borders.
Why is margin not overlapping?
4 Answers. This is due to Margin Collapsing: If there is no border, padding, inline part, block formatting context created, or clearance to separate the margin-bottom of a block from the margin-bottom of its last child, then those margins collapse. The collapsed margin ends up outside the parent.
What are the differences between collapsing margins and border-collapse?
Do left and right margins collapse?
Before we talk about margin collapse and what it is, let’s get one thing clear. Only one type of margin can collapse: Vertical (top and bottom). Margin collapse never applies to horizontal (left and right) margins.
When does margin collapse in CSS style sheet?
If there is no border, padding, inline content, height, or min-height to separate a block’s margin-top from its margin-bottom, then its top and bottom margins collapse. Some things to note: More complex margin collapsing (of more than two margins) occurs when the above cases are combined.
How are the top and bottom margins of a block collapsed?
The top and bottom margins of blocks are sometimes combined (collapsed) into a single margin whose size is the largest of the individual margins (or just one of them, if they are equal), a behavior known as margin collapsing.
What does the bottom margin do in CSS?
The top and bottom margins have no effect on non- replaced inline elements, such as or . Note: Margins create extra space around an element. In contrast, padding creates extra space within an element.
When does the first margin apply to the top and bottom?
When two values are specified, the first margin applies to the top and bottom, the second to the left and right. When three values are specified, the first margin applies to the top, the second to the right and left, the third to the bottom.