To center a `div` element in 2022, you can use the `margin: auto` CSS property. This will horizontally center the element within its parent container.

Here’s an example:

“`css
div {
width: 100px;
height: 100px;
margin: auto;
}
“`

This will center the `div` within its parent container, assuming that the parent element has a defined width. If the parent element doesn’t have a defined width, you’ll need to set one in order for the centering to work properly.

Alternatively, you can use the `display: flex` and `justify-content: center` properties to center the `div` horizontally. This method can be useful if you want to center multiple elements within the same container.

Here’s an example:

“`css
.container {
display: flex;
justify-content: center;
}

div {
width: 100px;
height: 100px;
}
“`

This will horizontally center all of the `div` elements within the `.container` element. Note that you’ll need to set the width of the container in order for this method to work properly.