Center an element

To place an item into the center of another box horizontally and vertically.

To center one box inside another we make the containing box a flex container. Then set align-items to center to perform centering on the block axis, and justify-content to center to perform centering on the inline axis.

In the future we may be able to center elements without needing to turn the parent into a flex container, as the Box Alignment properties used here are specified to apply to block layout too. However, support is currently limited for box alignment properties on block layout, so currently centering using Flexbox is the most robust way to achieve this.

• Box Alignment in Flexbox
• CSS Box alignment guide