如何让文本自动垂直居中?_css

给容器设置一个与其高度相同的行高就可以了以下是html网页特效代码，点击运行按钮可查看效果：


 以下是程序代码

</CODE><!DOCTYPE <a href="https://www.gaodaima.com/tag/html" title="查看更多关于html的文章" target="_blank">html</a> PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh" lang="zh"> <head profile="http://www.w3.org/2000/08/w3c-synd/#"> <meta http-equiv="content-language" content="zh-cn" /> <meta http-equiv="content-type" content="text/html;charset=gb2312" /> <title>blueidea</title> <style type="text/<a href="https://www.gaodaima.com/go.html?url=http://www.gaodaima.com/tag/css"  title="css" rel="nofollow" target="_blank">css</a>"> /*<![CDATA[*/ div {  height:30px;  line-height:30px;  border:1px solid red  } /*]]>*/ </style> </head> <body> <div>web标准常见问题大全</div> </body> </html></font> <a href="http://<a href="https://www.gaodaima.com/go.html?url=http://www.gaodaima.com/tag/js"  title="js" rel="nofollow" target="_blank">js</a>.alixixi.com/">欢迎访问阿里西西网页特效代码站，js.alixixi.com</a>[/code]<br /><input onclick="runEx('CodeText14841')"  type="button" value="运行代码"/> <input onclick="doCopy('CodeText14841')"  type="button" value="复制代码"/> <input onclick="saveCode('CodeText14841')"  type="button" value="另存代码"/><br /> [Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]</div>
</div>
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