How to center a div in html

There are two ways to center a div in HTML: Use the text-align attribute (text-align: center): suitable for simpler layouts. Use flexible layout (Flexbox): Provide more flexible layout control. The steps include: enabling Flexbox (display: flex) in the parent element. Set the div as a Flex item (flex: 1). Use the align-items and justify-content properties for vertical and horizontal centering.

How to center a div

In HTML, you can use CSS properties to center a div. There are two methods:

Method 1: Use the text-align attribute

This method is suitable for simpler layouts, use the text-align attribute ：

div {
  text-align: center;
}

Method 2: Use flexible layout (Flexbox)

Flexbox is a CSS layout module that provides more flexible layout control. To center a div using Flexbox, use the following steps:

1. Enable Flexbox in the parent element: Set display: flex## for the parent element containing the div #.

.container {
  display: flex;
}

2. Set the div as a Flex item: Set the flex attribute to the div so that it becomes the Flex item of the parent element.

div {
  flex: 1;
}

3. Vertical centering: Use the align-items attribute to vertically center the div.

.container {
  align-items: center;
}

4. Horizontal centering: Use the justify-content attribute to center the div horizontally.

.container {
  justify-content: center;
}

Example:

<div class="container">
  <div>这是居中的内容</div>
</div>

.container {
  display: flex;
  align-items: center;
  justify-content: center;
}

div {
  flex: 1;
}

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