Usage of HTML tag
html5 header element tag The new tag element of html5 is
1. Basic introduction to the header tag element - TOP
Before the HTML5 version, it was customary to use div tags to layout web pages. In HTML5, a new header tag element is added based on the DIV tag. Also called the "
It is recognized that "header" is a commonly used name in HTML layout, so a new header tag element has been added to HTML5. You can understand why the header is added as a label element in html5.
In addition to using the header tag directly, you can also set class or id to the header.
2. Syntax structure - TOP
The header tag element is used the same as div. There is a beginning and a closing.
Grammar:
1. Directly do not give the id or class
2. Set id
3. Set class
4. Features: Just like the DIV tag element, it can be used multiple times in different places Different styles can be set using id or class.
3. Compatibility - TOP
Because the header tag is a new tag element in HTML5, older versions of browsers do not support it. It requires IE9+ or above browsers, the latest Google Chrome and other browsers. support. Of course, domestic browsers such as 360 Browser, Baidu Browser, and Aoyou Browser all use the IE kernel that comes with the system, so domestic browsers are actually the same version as the IE version that comes with your system, so your IE browser is IE9 or above. The version is naturally compatible with the new tag elements of HTML5.
4. Comparison case of old and new DIV layout - TOP
Observe and master the application of header by comparing DIV+CSS layout and HTML5+CSS layout.
1. DIVCSS5 instance HTML5+CSS complete code
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>html5 Header标签实例 DIVCSS5</title>
<style>
/* 传统布局CSS */
#header{ width:300px; height:40px; background:#CCC}
/* HTML5布局样式 */
header{ width:400px; height:70px; color:#F00; background:#F5F5F5}
.color-000{ color:#000; background:#666}
</style>
</head>
<body>
<div id="header">我在传统div布局中</div>
<header>我在传统div布局中,必须在支持HTML5浏览器才能看到效果，
建议谷歌浏览器测试观察效果</header>
<header class="color-000">我颜色为黑色,背景为#666</header>
</body>
</html>2. Effect screenshot
The above is the detailed content of Usage of HTML
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