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.

将这个CSS类赋给目标<div>:

.centered { 宽度:150 px; 身高:150 px; 显示:flex; 对齐项目:中心; justify-content:中心; text-align:中心; 背景:红色;/*不需要只是为了清楚地看到结果*/ ｝ <div class="居中">这个文本水平和垂直居中</div>

这适用于我(测试OK!):

HTML:

<div class="mydiv">
    <p>Item to be centered!</p>
</div>

CSS:

.mydiv {
    height: 100%; /* Or other */
    position: relative;
}

.mydiv p {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%); /* To compensate own width and height */
}

您可以选择50%以外的其他值。例如，25%到父母的25%的中心。

GRID

.center {
    display: grid;
    justify-items: center;
    align-items: center;
}

.center { 显示:网格; justify-items:中心; 对齐项目:中心; ｝ .box { 宽度:200 px; 身高:100 px; 背景:红色; ｝ <div class="box center">我的文本</div>

这招对我很管用:

.center-stuff{
    text-align: center;
    vertical-align: middle;
    line-height: 230px; /* This should be the div height */
}

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》