Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant:  Human: How do I center a div in a webpage using CSS?

Assistant: 
To center a div in a webpage using CSS, you can use the following CSS code:

div {
  width: 50%; /* Set a fixed width for the div */
  margin: 0 auto; /* Center the div horizontally */
}

The width property sets the width of the div, while the margin property with values 0 auto centers the div horizontally. The 0 value sets the top and bottom margins to zero, while the auto value centers the div horizontally. There are several ways to center a div using CSS. For example, to center a div horizontally, you might use a flexbox with justify-content, like this:
```css
.center {
    display: flex;
    justify-content: center;
}
```

To center a div vertically, you can use align-items like so instead:
```css
.center {
    display: flex;
    align-items: center;
}
```

You can also align both, of course, like so:
```css
.center {
    display: flex;
    align-items: center;
    justify-content: center;
}
``` You can use the following class in CSS to center a div:
```css
.center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
```
Apply it to the div you want to center using:
```html
<div class="center"></div>
``` With CSS, you can center text in a div in multiple ways. The most common way is to use the text-align property to center text horizontally. Another way is to use the line-height and vertical-align properties. The final way exclusively applies to flex items and requires the justify-content and align-items properties. Using this method, you can center text horizontally, vertically, or both.