css writing-mode: vertical-rl文字垂直水平居中

核心代码

.box {
    width: 100px;
    text-align: center; // 垂直居中
    writing-mode: vertical-rl;
    
    // 文字水平居中
    &::before {
        display: inline-block;
        width: 100%;
        content:'';
    }
}

浏览器版本：Chrome 103

测试代码

<div style="
    width: 100px;
    height: 300px;
    border: 1px solid;
    border-radius: 10px;
    writing-mode: vertical-rl;
    text-align: center;
    margin: auto;
">君不见</div>

div::before {
    display: inline-block;
    width: 100%;
    content: '';
}

效果图