Why is margin 0 auto?

margin: 0 auto is shorthand for setting the top and bottom margins to zero, and the left and right margins to auto. This is important, because without the 100px width I have defined, the browser will not be able to render the left and right margins needed to center the yellow box.

How do you use margin 0 auto?

So in margin: 0 auto, the top/bottom margin is 0, and the left/right margin is auto, Where auto means that the left and right margin are automatically set by the browser based on the container, to make element centered.

How do I set auto margin in CSS?

The auto Value You can set the margin property to auto to horizontally center the element within its container. The element will then take up the specified width, and the remaining space will be split equally between the left and right margins.

What is CSS Auto Value?

Auto is a CSS value that has a number of uses. It’s the default value for a lot of box-model properties like width , height , margin , and background-size . There’s other more obscure places that auto can be used as well, like overflow , cursor , table-layout and the column-width property of CSS columns.

What is Auto in CSS?

What does margin-left auto do?

margin-left: auto; The auto keyword will give the left side a share of the remaining space. When combined with margin-right: auto , it will center the element, if a fixed width is defined.

What do you need for margin 0 Auto to work?

11 Answers

1. The element must be block-level, e.g. display: block or display: table.
2. The element must not float.
3. The element must not have a fixed or absolute position.

Does margin auto work with inline block?

`margin:auto;` doesn’t work on inline-block elements – Stack Overflow.

What is margin-top auto?

The margin-top property in CSS is used to set the top margin of an element. It sets the margin-area on the top of the element. The default value of the margin-top property is 0.

What is CSS width Auto?

Width auto. The initial width of a block level element like div or p is auto. This makes it expand to occupy all available horizontal space within its containing block. If it has any horizontal padding or border, the widths of those do not add to the total width of the element.