CSS3 和 HTML5 引入了大量新特性,为前端开发提供了更多功能和更好的语义化支持。这本教程将详细介绍 CSS3 新语法和技巧,以及 HTML5 新的语义化标签元素,如 、、、、 等。希望通过本教程,读者能够掌握这些新特性的使用方法,提高前端开发水平。
HTML5 引入了许多新的语义化标签,这些标签使 HTML 代码更加清晰和结构化,便于搜索引擎和开发人员理解。
标签用于定义文档或文档节的头部,通常包含标题、导航链接和其他头部内容。
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Header Exampletitle>
<style>
header {
background-color: #f8f8f8;
padding: 20px;
text-align: center;
border-bottom: 1px solid #ccc;
}
header h1 {
margin: 0;
font-size: 2em;
}
header nav a {
margin: 0 10px;
text-decoration: none;
color: #333;
}
style>
head>
<body>
<header>
<h1>My Websiteh1>
<nav>
<a href="#home">Homea>
<a href="#about">Abouta>
<a href="#contact">Contacta>
nav>
header>
body>
html>
标签用于定义文档或文档节的尾部,通常包含版权信息、作者信息和其他尾部内容。
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Footer Exampletitle>
<style>
footer {
background-color: #f8f8f8;
padding: 20px;
text-align: center;
border-top: 1px solid #ccc;
position: fixed;
width: 100%;
bottom: 0;
}
footer p {
margin: 0;
font-size: 1em;
}
style>
head>
<body>
<footer>
<p>© 2024 My Website. All rights reserved.p>
footer>
body>
html>
标签用于定义文档中的节(section),表示文档的某个区域或功能块。
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Section Exampletitle>
<style>
section {
background-color: #f0f0f0;
padding: 20px;
margin: 10px 0;
border: 1px solid #ccc;
}
section h2 {
margin-top: 0;
}
style>
head>
<body>
<section>
<h2>Introductionh2>
<p>This is the introduction section.p>
section>
<section>
<h2>Main Contenth2>
<p>This is the main content section.p>
section>
body>
html>
标签用于定义独立的内容块,如博客文章、新闻报道等。
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Article Exampletitle>
<style>
article {
background-color: #ffffff;
padding: 20px;
margin: 10px 0;
border: 1px solid #ccc;
}
article h2 {
margin-top: 0;
}
article p {
text-indent: 2em;
}
style>
head>
<body>
<article>
<h2>First Blog Posth2>
<p>Published on: January 1, 2024p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer nec odio. Praesent libero. Sed cursus ante dapibus diam.p>
article>
<article>
<h2>Second Blog Posth2>
<p>Published on: February 1, 2024p>
<p>Sed nisi. Nulla quis sem at nibh elementum imperdiet. Duis sagittis ipsum. Praesent mauris. Fusce nec tellus sed augue semper porta.p>
article>
body>
html>
标签用于定义导航链接的集合。
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Nav Exampletitle>
<style>
nav {
background-color: #333;
color: white;
padding: 10px;
text-align: center;
}
nav a {
color: white;
margin: 0 10px;
text-decoration: none;
}
nav a:hover {
text-decoration: underline;
}
style>
head>
<body>
<nav>
<a href="#home">Homea>
<a href="#services">Servicesa>
<a href="#portfolio">Portfolioa>
<a href="#contact">Contacta>
nav>
body>
html>