The <head> element is a container for metadata (data about data) The <head> element is placed between the <html> tag and the <body> tag The <title> element is required and it defines the title of the document The <style> element is used to define style information for a single ...
It has a start tag <html> and an end tag </html>.Then, inside the <html> element there is a <body> element:<body> <h1>My First Heading</h1><p>My first paragraph.</p> </body> The <body> element defines the document's body....
In this example, we call the paragraph element the “parent” element, and the anchor element is called the “child” element. Child elements can also contain nested elements and thus be parent elements themselves. You can nest elements as many l...
The <menu> HTML element is described in the HTML specification as a semantic alternative to <ul>, but treated by browsers (and exposed through the accessibility tree) as no different than <ul>. It represents an unordered list of items (which are represented by <li> elements). ...
元素(Element):开始标签、结束标签与内容相结合,便是一个完整的元素。 元素的属性 元素也可以拥有属性(Attribute): 属性包含元素的额外信息,这些信息不会出现在实际的内容中。 一个属性必须包含如下内容: 一个空格,在属性和元素名称之间。(如果已经有一个或多个属性,就与前一个属性之间有一个空格。) ...
The <html> HTML element represents the root (top-level element) of an HTML document, so it is also referred to as the root element. All other elements must be descendants of this element. There can be only one <html> element in a document. ...
这是一个加粗的标签，比如加粗某段文字，例如：<b>这段是加粗文字</b> 这里就会加粗这段文字，不过html5淘汰了这个标签，用css里的属性控制了。此元素在 Internet Explorer 3.0 及以上版本的 HTML 中可用，在 Internet Explorer 4.0 及以上版本的脚本中可用。此元素是内嵌元素。此元素需要关闭标签...
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<strike>Places a strikethrough (horizontal line) over text. <tt>Creates inline text which is presented using the user agent default monospace font face. This element was created for the purpose of rendering text as it would be displayed on a fixed-width display such as a teletype, text-only...
Choose Develop > Start Element Selection. Press Shift-Command-C. In the Safari window, move the pointer over a webpage element. The element is highlighted with a light blue selector box, sometimes surrounded by green (padding), yellow (border), or orange (margin), and an info window displ...