【在HTML中调用CSS的方法】

时间：2022-12-06 20:12:47

1.内联式CSS样式

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>内联样式</title>
</head>
<body>
<p style="font-size: 40px;color: red">红色</p>
<p style="font-size: 40px;color: green">绿色</p>
<p style="font-size: 40px;color: blue">蓝色</p>
</body>
</html>

 

2.内嵌式CSS样式

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>内嵌样式</title>
<style type="text/css">
        .red{
            color:red;
}
        .green{
            color: green;
}
</style>
</head>
<body>
<p class="red">红1</p>
<p class="green">绿1</p>
<p class="red">红2</p>
<p class="green">绿2</p>
</body>
</html>

 

3.导入外部CSS样式

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>导入外部样式</title>
<style type="text/css">
        @import url(../css/color.css);
</style>
</head>
<body>
<p class="red">红1</p>
<p class="green">绿1</p>
<p class="red">红2</p>
<p class="green">绿2</p>
</body>
</html>

 

4.链接式CSS样式

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>链接式样式表</title>
<link rel="stylesheet" type="text/css" href="../css/color.css">
</head>
<body>
<p class="red">红1</p>
<p class="green">绿1</p>
<p class="red">红2</p>
<p class="green">绿2</p>
</body>
</html>

 

CSS样式生效的优先级问题：内联样式>嵌入式样式>导入样式>链接样式

 

全局选择器：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>全局选择器</title>
<style type="text/css">
        *{
            color: red;
            font-size: 14px;
}
</style>
</head>
<body>
<p class="red">红1</p>
<p class="green">绿1</p>
<p class="red">红2</p>
<p class="green">绿2</p>
</body>
</html>

 

 
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