<hgroup>
HTML <hgroup> Tag
The <hgroup> tag is used to group HTML Headings. We use <hgroup> to wrap one or more heading elements from <h1> - <h6>.
The <hgroup> tag allows to group the primary heading with secondary headings forming a multi-level heading. It prevents any secondary <h1> - <h6> children from creating their separate sections.
In the abstract outline <hgroup> forms one logical heading, with an overall set of <h1> - <h6> children which go into the outline as one multi-level unit. An <hgroup> element can be shown in a rendered outline in many ways:
It can be shown with a colon character and space or other punctuation after the primary heading and before the first secondary heading. （-它可以在主标题后和第一个辅助标题前用结肠字符和空格或其他标点符号显示。）
It can be shown with the primary heading, which is followed by secondary headings in parentheses. （-它可以用主要标题显示，后面是括号中的次要标题。）
The <hgroup> is not supported in HTML5, but it’s supported in WHATWG Living Standard specification. The future of the element isn’t yet clear, that’s why it is better to avoid using this tag.
Syntax
Syntax （语法）
The <hgroup> tag comes in pairs. However, the closing tag isn’t required.
Example of the HTML <hgroup> tag:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<hgroup>
<h1>Welcome to w3cdoc</h1>
<h2>Here you can learn HTML Bases.</h2>
</hgroup>
</body>
</html>
Result
Example of the HTML <hgroup> tag used with CSS properties:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
hgroup {
text-align: right;
font-family: Arial, sans-serif;
padding-right: 30px;
border-right: 15px solid #42c73a;
}
h1 {
font-size: 30px;
}
h2 {
font-size: 20px;
}
p {
font-family: Arial, sans-serif;
font-size: 16px;
line-height: 1.5;
}
</style>
</head>
<body>
<hgroup>
<h1>Welcome to w3cdoc</h1>
<h2>Learn online</h2>
</hgroup>
<p>
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
（Lorem Ipsum只是印刷和排版行业的虚拟文本。自15世纪以来， Lorem Ipsum一直是业界标准的虚拟文本，当时一位不知名的打印机将一个类型的厨房拼凑起来制作了一本样本书。Lorem Ipsum只是印刷和排版行业的虚拟文本。自15世纪以来， Lorem Ipsum一直是业界标准的虚拟文本，当时一位不知名的打印机将一个类型的厨房拼凑起来制作了一本样本书。）
</p>
</body>
</html>
Attributes
Attributes （属性）
The <hgroup> tag supports the Global Attributes.
How to style <hgroup> tag? Common properties to alter the visual weight/emphasis/size of text in <hgroup> tag:
CSS font-style property sets the style of the font. normal | italic | oblique | initial | inherit. CSS font-family property specifies a prioritized list of one or more font family names and/or generic family names for the selected element. CSS font-size property sets the size of the font. CSS font-weight property defines whether the font should be bold or thick. CSS text-transform property controls text case and capitalization. CSS text-decoration property specifies the decoration added to text, and is a shorthand property for text-decoration-line, text-decoration-color, text-decoration-style.
Coloring text in <hgroup> tag:
CSS color property describes the color of the text content and text decorations. CSS background-color property sets the background color of an element.
Text layout styles for <hgroup> tag:
CSS text-indent property specifies the indentation of the first line in a text block. CSS text-overflow property specifies how overflowed content that is not displayed should be signalled to the user. CSS white-space property specifies how white-space inside an element is handled. CSS word-break property specifies where the lines should be broken.
Other properties worth looking at for <hgroup> tag:
CSS text-shadow property adds shadow to text. CSS text-align-last property sets the alignment of the last line of the text. CSS line-height property specifies the height of a line. CSS letter-spacing property defines the spaces between letters/characters in a text. CSS word-spacing property sets the spacing between words.