Today’s article will introduce the usage of CSS media types. Media types allow you to specify how files will be presented in different media. Let’s take a look at the specific content.
Depending on the web site, errors in the web page may appear in unexpected forms, such as layout folding when printing, but in the media type, it can be set to avoid It means you can create pages for printing, output to a projector, etc.
How to use CSS media types?
Media types can be written in two ways.
First way
<link rel="stylesheet" href="sample.css" type="text/css" media="screen">
Second way
@media screen{
/*screen的内容*/
}The first one uses to change the applied CSS based on the media type.
The second is to write settings for each media type in CSS
Since sometimes a large amount of CSS code is difficult to change when there are some changes, it is recommended to use the first method , but this time we take the second way as an example to introduce CSS media types.
Let’s take a brief look at the several media types commonly used in CSS
screen (screen)
print (print)
tv(TV)
projection(projector)
all(all)
When using two media types, they can be separated by commas. Let’s look at the specific example
The code is as follows
HTML code
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>How to use CSS media types</title>
<link rel="stylesheet" type="text/css" href="sample.css">
</head>
<body>
<h1 id="Sample">Sample</h1>
<p>根据媒体的不同，背景颜色会改变</p>
<p>screen : 平常显示 : #d9534f（红色）</p>
<p>print : 打印时显示: #5bc0de（蓝色）</p>
</body>
</html>CSS code
sample.css
@media all{
p{
color:#000000;
}
}
@media print{
body{
color: #5bc0de;
}
}
@media screen{
body{
color: #d9534f;
}
}Execute the above code and the following effect will be displayed on the browser page
Sample is red
When proceeding When printing the preview, the browser displays the following effect
Sample turns blue
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