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Why does margin not work?
This issue is known as Margin Collapse and happens sometimes between top and bottom margins on block elements. That’s why the margin doesn’t work on the p tag. And on the a tag the margin doesn’t work because it’s an inline element. You may need to change its display property to inline-block or block .
Why does margin auto not work?
Setting the element to position:static; (the default) may fix it under these circumstances. Generally, block level elements with a specified width will respect margin:0 auto; using either relative or static positioning. In my case the problem was that I had set min and max width without width itself.
What causes container collapse CSS?
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 effect does happen on an element if its left and right margin is set to auto?
By assigning auto to the left and right margins of an element, they take up the available horizontal space in the element’s container equally – and thus the element gets centered.
Do margins collapse?
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. Note that the margins of floating and absolutely positioned elements never collapse.
What is top margin?
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.
Why is the top margin of my document missing?
My top margin is missing. More… If your document is in Print Layout view and the top and bottom margins appear to be cut off, the option for hiding margins has been switched on. Here’s how to switch it off: Point to the top or bottom of a page until the pointer becomes a double-pointed arrow, and then double-click.
Why are my margins being ignored in CSS?
CSS: Why are my margins being ignored? Sometimes when you’re building your website you’ll find that the margins you put on an element are not working properly. This is referred to as collapsing margins. It’s not a bug, but a feature of CSS.
What happens if one margin is greater than the other?
If one margin is greater than the other, then that margin overrides the other, leaving one margin. Let’s say we had elements stacked on top of each other, one with a bottom margin and one with a top margin:
How can I prevent my margins from collapsing?
There are several different techniques for doing this. Since margins don’t collapse when there is padding or a border on the parent element, one way to prevent the margins from collapsing is to give the parent element padding or a transparent border.