这应该是正确答案。最干净最简单:

.element {
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

div { 身高:90 px; 行高:90 px; text-align:中心; 边界:2px虚线#f69c55; } < div > 你好,世界! ! < / div >

调整线高度以获得垂直对齐。

line-height: 90px;

方法1

div { 身高:90 px; 行高:90 px; text-align:中心; 边界:2px虚线#f69c55; ｝ < div > 你好,世界! ! < / div >

方法2

div { 身高:200 px; 行高:200 px; text-align:中心; 边界:2px虚线#f69c55; ｝ 跨度{ 显示:inline-block; vertical-align:中间; 行高:正常; ｝ < div > <span>我与你同在，我与你同在。对我说，对我说，对我说。非enim iam stirpis bonum quaeret, sed animalis。< / span > < / div >

方法3

div { 显示:表; 身高:100 px; 宽度:100%; text-align:中心; 边界:2px虚线#f69c55; ｝ 跨度{ 显示:表格单元; vertical-align:中间; ｝ < div > <span>神圣的神圣，神圣的神圣。</span> < / div >

您可以尝试以下方法:

If you have a single word or one line sentence, then the following code can do the trick. Have a text inside a div tag and give it an id. Define the following properties for that id. id-name { height: 90px; line-height: 90px; text-align: center; border: 2px dashed red; } Note: Make sure the line-height property is same as the height of the division. Image But, if the content is more than one single word or a line then this doesn’t work. Also, there will be times when you cannot specify the size of a division in px or % (when the division is really small and you want the content to be exactly in the middle). To solve this issue, we can try the following combination of properties. id-name { display: flex; justify-content: center; align-items: center; border: 2px dashed red; } Image These 3 lines of code sets the content exactly in the middle of a division (irrespective of the size of the display). The "align-items: center" helps in vertical centering while "justify-content: center" will make it horizontally centered. Note: Flex does not work in all browsers. Make sure you add appropriate vendor prefixes for additional browser support.

使用flexbox / CSS:

<div class="box">
    <p>&#x0D05;</p>
</div>

CSS:

.box{
    display: flex;
    justify-content: center;
    align-items: center;
}

摘自《快速提示:垂直和水平居中元素的最简单方法》