<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>start</title>
<style>
body {background-color:tan;}
h1 {color:maroon;font-size:20pt;text-align:center;}
hr {color:white;}
p {font-size:11pt;margin-left:50px;}
a:link {color:green;}<!--点击变色-->
a:visited {color:yellow;}
a:hover {color:black;}
a:active {color:blue;}
</style>
</head>
<body>
<h1>这是标题</h1>
<hr> <!-- 直线 -->
<p>你可以看到这个段落是
被设定的 CSS 渲染的。</p>
<p><a href="http://www.runoob.com"
target="_self">这是一个链接</a></p>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CSS</title>
<style>
body
{
background-color:#d0e4fe;
}
h1
{
color:red;
text-align:center;
}
p
{
font-family:"微软雅黑";
font-size:30px;
}
</style>
</head>
<body>
<h1>CSS 实例!</h1>
<p>这是一个段落。</p>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CSS</title>
<style>
body {background-color:yellow;}
h1 {font-size:36pt;}
h2 {color:blue;}
p {margin-left:50px;}
</style>
</head>
<body>
<h1>这个标题设置的大小为 36 pt</h1>
<h2>这个标题设置的颜色为蓝色：blue</h2>
<p>这个段落的左外边距为 50 像素：50px</p>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
ul {
list-style-type: none;
margin: 0;
padding: 0;
width: 200px;
background-color: #f1f1f1;
}
li a {
display: block;
color: #000;
padding: 8px 16px;
text-decoration: none;
}
li a.active {
background-color: black;
color: white;
}
li a:hover:not(.active) {
background-color: #555;
color: white;
}
</style>
</head>
<body>
<h2>垂直导航条</h2>
<p>在点击了选项后，我们可以添加 "active" 类来标准哪个选项被选中。</p>
<ul>
<li><a class="active" href="#home">主页</a></li>
<li><a href="#news">新闻</a></li>
<li><a href="#contact">联系</a></li>
<li><a href="#about">关于</a></li>
</ul>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
body {
margin: 0;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
width: 25%;
background-color: #f1f1f1;
position: fixed;
height: 100%;
overflow: auto;
}
li a {
display: block;
color: #000;
padding: 8px 16px;
text-decoration: none;
}
li a.active {
background-color: #4CAF50;
color: white;
}
li a:hover:not(.active) {
background-color: #555;
color: white;
}
</style>
</head>
<body>
<ul>
<li><a class="active" href="#home">主页</a></li>
<li><a href="#news">新闻</a></li>
<li><a href="#contact">联系</a></li>
<li><a href="#about">关于</a></li>
</ul>
<div style="margin-left:25%;padding:1px 16px;height:1000px;">
<h2>Fixed Full-height Side Nav</h2>
<h3>Try to scroll this area, and see how the sidenav sticks to the page</h3>
<p>Notice that this div element has a left margin of 25%. This is because the side navigation is set to 25% width. If you remove the margin, the sidenav will overlay/sit on top of this div.</p>
<p>Also notice that we have set overflow:auto to sidenav. This will add a scrollbar when the sidenav is too long (for example if it has over 50 links inside of it).</p>
<p>Some text..</p>
<p>Some text..</p>
<p>Some text..</p>
<p>Some text..</p>
<p>Some text..</p>
<p>Some text..</p>
<p>Some text..</p>
</div>
</body>
</html><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
body {margin:0;}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
position: fixed;
top: 0;
width: 100%;
}
li {
float: left;
}
li a {
display: block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover:not(.active) {
background-color: #111;
}
.active {
background-color: #4CAF50;
}
</style>
</head>
<body>
<ul>
<li><a class="active" href="#home">主页</a></li>
<li><a href="#news">新闻</a></li>
<li><a href="#contact">联系</a></li>
<li><a href="#about">关于</a></li>
</ul>
<div style="padding:20px;margin-top:30px;background-color:#1abc9c;height:1500px;">
<h1>Fixed Top Navigation Bar</h1>
<h2>Scroll this page to see the effect</h2>
<h2>The navigation bar will stay at the top of the page while scrolling</h2>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
</div>
</body>
</html><!DOCTYPE html>
<html>
<head>
<title>下拉菜单实例|菜鸟教程(runoob.com)</title>
<meta charset="utf-8">
<style>
.dropbtn {
background-color: #4CAF50;
color: white;
padding: 16px;
font-size: 16px;
border: none;
cursor: pointer;
}
.dropdown {
position: relative;
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
right: 0;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdown:hover .dropbtn {
background-color: #3e8e41;
}
</style>
</head>
<body>
<h2>下拉内容的对齐方式</h2>
<p>left 和 right 属性指定了下拉内容是从左到右或从右到左。</p>
<div class="dropdown" style="float:left;">
<button class="dropbtn">左</button>
<div class="dropdown-content" style="left:0;">
<a href="#">菜鸟教程 1</a>
<a href="#">菜鸟教程 2</a>
<a href="#">菜鸟教程 3</a>
</div>
</div>
<div class="dropdown" style="float:right;">
<button class="dropbtn">右</button>
<div class="dropdown-content">
<a href="#">菜鸟教程 1</a>
<a href="#">菜鸟教程 2</a>
<a href="#">菜鸟教程 3</a>
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title>下拉菜单实例|菜鸟教程(runoob.com)</title>
<meta charset="utf-8">
<style>
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
}
li {
float: left;
}
li a, .dropbtn {
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover, .dropdown:hover .dropbtn {
background-color: #111;
}
.dropdown {
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content {
display: block;
}
</style>
</head>
<body>
<ul>
<li><a class="active" href="#home">主页</a></li>
<li><a href="#news">新闻</a></li>
<div class="dropdown">
<a href="#" class="dropbtn">下拉菜单</a>
<div class="dropdown-content">
<a href="#">链接 1</a>
<a href="#">链接 2</a>
<a href="#">链接 3</a>
</div>
</div>
</ul>
<h3>导航栏上的下拉菜单</h3>
<p>鼠标移动到 "下拉菜单" 链接先显示下拉菜单。</p>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
div.img {
margin: 5px;
border: 1px solid #ccc;
float: left;
width: 180px;
}
div.img:hover {
border: 1px solid #777;
}
div.img img {
width: 100%;
height: auto;
}
div.desc {
padding: 15px;
text-align: center;
}
</style>
</head>
<body>
<div class="responsive">
<div class="img">
<a target="_blank" href="http://static.runoob.com/images/demo/demo1.jpg">
<img src="http://static.runoob.com/images/demo/demo1.jpg" alt="图片文本描述" width="300" height="200">
</a>
<div class="desc">1</div>
</div>
</div>
<div class="responsive">
<div class="img">
<a target="_blank" href="http://static.runoob.com/images/demo/demo2.jpg">
<img src="http://static.runoob.com/images/demo/demo2.jpg" alt="图片文本描述" width="300" height="200">
</a>
<div class="desc">2</div>
</div>
</div>
<div class="responsive">
<div class="img">
<a target="_blank" href="http://static.runoob.com/images/demo/demo3.jpg">
<img src="http://static.runoob.com/images/demo/demo3.jpg" alt="图片文本描述" width="300" height="200">
</a>
<div class="desc">3</div>
</div>
</div>
<div class="responsive">
<div class="img">
<a target="_blank" href="http://static.runoob.com/images/demo/demo4.jpg">
<img src="http://static.runoob.com/images/demo/demo4.jpg" alt="图片文本描述" width="300" height="200">
</a>
<div class="desc">4</div>
</div>
</div>
</body>
</html>本文均来自菜鸟联盟。。。。。。。。。。。。。。。。。