CSS 多行文字居中

方法一：

<style>
    .demo {
        width: 220px;
        height: 52px;
        border: 1px solid red;
        font-size: 13px;
    }

    .demo-flex {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
    }

</style>
<div class="demo demo-flex">
    <span>Real Estate/Construction,Building Management/Decoration</span>
</div>

方法二：

<style>
    .demo {
        width: 220px;
        height: 52px;
        font-size: 13px;
        border: 1px solid red;
        display: flex;
        align-items: center;
        justify-content: center;
    }
</style>
<div class="demo">
    <span>Real Estate/Construction,Building Management/Decoration</span>
</div>

相容 IE 7 以上版

<style>
   .demo3 {
        display: table-cell;
        width: 220px;
        height: 52px;
        border: 1px solid red;
        font-size: 13px;
        vertical-align: middle;
    }
</style>
<div class="demo3">
    <span>Real Estate/Construction,Building Management/Decoration</span>
</div>