如何使用 CSS 的 Flexbox 属性使 <div> 居中?
We can center a
使用 align-items 和 justify-content 属性
使用flexbox的最流行的居中div的方法是结合justify-content和align-items属性。
justify-content属性会水平居中对齐div。
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align-items属性将div垂直居中对齐。
If you want to center align only in one direction, i.e., either vertically or horizontally, we should use only one among the properties we mentioned.
Use the align-items and the justify-contents to center align the child horizontally and vertically.
Example
<!DOCTYPE html><html lang="en"><style> .parent{ border: 2px solid green; height:30vh; width:30vw; display: flex; flex-direction: row; justify-content: center; align-items: center; background-color: orange; } .child{ border: 2px solid red; height:10vh; width:10vw; background-color: yellow; }</style></head><body> <div class="parent"> <div class="child"> This is the child element. </div> </div></body></html>
In the code, the parent element is a green-bordered orange box with a height of 30% of the viewport height and a width of 30% of the viewport width.The parent is centered both horizontally and vertically with the help of "display: flex", "flex-direction: row", "justify-content: center" and "align-items: center."
要使用align-items和justify-content,我们首先需要使用display属性声明元素为flexbox。子元素是一个高度为视口高度的10%、宽度为视口宽度的10%的带有红色边框的黄色盒子,放置在父元素内部。
结论
在本文中,我们了解了如何使用CSS的flexbox属性来居中一个