30秒学会 CSS 片段 – Grid centering

Horizontally and vertically centers a child element within a parent element using grid.

• display: grid creates a grid layout
• justify-content: center centers the child horizontally.
• align-items: center centers the child vertically.

预览

HTML

<div class="grid-centering">
  <div class="child">Centered content.</div>
</div>

CSS

.grid-centering {
  display: grid;
  justify-content: center;
  align-items: center;
  height: 100px;
}

翻译自：https://www.30secondsofcode.org/css/s/grid-centering