CSS3 多媒体查询实例
本章节我们将为大家演示一些多媒体查询实例。
开始之前我们先制作一个电子邮箱的链接列表。HTML 代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
ul {
list-style-type: none;
}
ul li a {
color: green;
text-decoration: none;
padding: 3px;
display: block;
}
</style>
</head>
<body>
<ul>
<li><a data-email="johndoe@example.com" href="">John Doe</a></li>
<li><a data-email="marymoe@example.com" href="">Mary Moe</a></li>
<li><a data-email="amandapanda@example.com" href="">Amanda Panda</a></li>
</ul>
</body>
</html>注意 data-email 属性。在 HTML 中我们可以使用带 data- 前缀的属性来存储信息。
520 到 699px 宽度 - 添加邮箱图标
当浏览器的宽度在 520 到 699px, 邮箱链接前添加邮件图标：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
ul {
list-style-type: none;
}
ul li a {
color: green;
text-decoration: none;
padding: 3px;
display: block;
}
@media screen and (max-width: 699px) and (min-width: 520px) {
ul li a {
padding-left: 30px;
background: url(../style/images/email-icon.png) left center no-repeat;
}
}
</style>
</head>
<body>
<h1>重置浏览器窗口，查看效果!</h1>
<ul>
<li><a data-email="johndoe@example.com" href="">John Doe</a></li>
<li><a data-email="marymoe@example.com" href="">Mary Moe</a></li>
<li><a data-email="amandapanda@example.com" href="">Amanda Panda</a></li>
</ul>
</body>
</html>700 到 1000px - 添加文本前缀信息
当浏览器的宽度在 700 到 1000px, 会在邮箱链接前添加 "Email: ":
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
ul {
list-style-type: none;
}
ul li a {
color: green;
text-decoration: none;
padding: 3px;
display: block;
}
@media screen and (max-width: 699px) and (min-width: 520px) {
ul li a {
padding-left: 30px;
background: url(../style/images/email-icon.png) left center no-repeat;
}
}
@media screen and (max-width: 1000px) and (min-width: 700px) {
ul li a:before {
content: "Email: ";
font-style: italic;
color: #666666;
}
}
</style>
</head>
<body>
<h1>重置浏览器窗口，查看效果!</h1>
<ul>
<li><a data-email="johndoe@example.com" href="">John Doe</a></li>
<li><a data-email="marymoe@example.com" href="">Mary Moe</a></li>
<li><a data-email="amandapanda@example.com" href="">Amanda Panda</a></li>
</ul>
</body>
</html>大于 1001px 宽度 - 添加邮件地址
当浏览器的宽度大于 1001px 时，会在链接后添加邮件地址接。
我们会使用 data- 属性来为每个人名后添加邮件地址：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
ul {
list-style-type: none;
}
ul li a {
color: green;
text-decoration: none;
padding: 3px;
display: block;
}
@media screen and (max-width: 699px) and (min-width: 520px) {
ul li a {
padding-left: 30px;
background: url(../style/images/email-icon.png) left center no-repeat;
}
}
@media screen and (max-width: 1000px) and (min-width: 700px) {
ul li a:before {
content: "Email: ";
font-style: italic;
color: #666666;
}
}
@media screen and (min-width: 1001px) {
ul li a:after {
content: " (" attr(data-email) ")";
font-size: 12px;
font-style: italic;
color: #666666;
}
}
</style>
</head>
<body>
<h1>重置浏览器窗口，查看效果!</h1>
<ul>
<li><a data-email="johndoe@example.com" href="">John Doe</a></li>
<li><a data-email="marymoe@example.com" href="">Mary Moe</a></li>
<li><a data-email="amandapanda@example.com" href="">Amanda Panda</a></li>
</ul>
</body>
</html>大于 1151px 宽度 - 添加图标
当浏览器的宽度大于 1001px 时，会在人名前添加图标。
实例中，我们没有编写额外的查询块，我们可以在已有的查询媒体后使用逗号分隔来添加其他媒体查询 (类似 OR 操作符):
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
ul {
list-style-type: none;
}
ul li a {
color: green;
text-decoration: none;
padding: 3px;
display: block;
}
@media screen and (max-width: 699px) and (min-width: 520px), (min-width: 1151px) {
ul li a {
padding-left: 30px;
background: url(../style/images/email-icon.png) left center no-repeat;
}
}
@media screen and (max-width: 1000px) and (min-width: 700px) {
ul li a:before {
content: "Email: ";
font-style: italic;
color: #666666;
}
}
@media screen and (min-width: 1001px) {
ul li a:after {
content: " (" attr(data-email) ")";
font-size: 12px;
font-style: italic;
color: #666666;
}
}
</style>
</head>
<body>
<h1>重置浏览器窗口，查看效果!</h1>
<ul>
<li><a data-email="johndoe@example.com" href="">John Doe</a></li>
<li><a data-email="marymoe@example.com" href="">Mary Moe</a></li>
<li><a data-email="amandapanda@example.com" href="">Amanda Panda</a></li>
</ul>
</body>
</html>
