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HTML <html> 标签


示例

一个简单的 HTML 文档

<!DOCTYPE html>
<html lang="en">
<head>
  <title>文档标题</title>
</head>
<body>

<h1>这是一个标题</h1>
<p>这是一个段落。</p>

</body>
</html>
亲自尝试 »

定义和用法

<html> 标签表示 HTML 文档的根节点。

<html> 标签是所有其他 HTML 元素(除了 <!DOCTYPE> 标签)的容器。

注意: 您应该始终在 <html> 标签内包含 lang 属性,以声明网页的语言。这是为了帮助搜索引擎和浏览器。


浏览器支持

元素
<html>


属性

属性 描述
xmlns http://www.w3.org/1999/xhtml 指定 XML 命名空间属性(如果您需要您的内容符合 XHTML)

全局属性

<html> 标签还支持 HTML 中的全局属性


相关页面

HTML 教程:HTML 简介

HTML DOM 参考资料:HTML 对象


默认 CSS 设置

大多数浏览器将使用以下默认值显示 <html> 元素

html {
  display: block;
}

html:focus {
  outline: none;
}


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