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文章目录
`CSS`
`CSS引入方式` 内部样式表 `行内样式表` `外部样式表` `Summary`
CSS
层叠样式表(Cascading Style Sheets)
👉CSS能够对网页中元素位置的排版进行像素级精确控制,实现美化页面的效果,能够做到页面的样式和结构分离.
<! DOCTYPE html >
< html lang = " en" >
< head>
< meta charset = " UTF-8" >
< meta name = " viewport" content = " width=device-width, initial-scale=1.0" >
< title> Document</ title>
</ head>
< body>
< p> hello world</ p>
</ body>
</ html>
<! DOCTYPE html >
< html lang = " en" >
< head>
< meta charset = " UTF-8" >
< meta name = " viewport" content = " width=device-width, initial-scale=1.0" >
< title> Document</ title>
< style>
p {
color : red;
font-size : 40px;
}
</ style>
</ head>
< body>
< p> hello world</ p>
</ body>
</ html>
<! DOCTYPE html >
< html lang = " en" >
< head>
< meta charset = " UTF-8" >
< meta name = " viewport" content = " width=device-width, initial-scale=1.0" >
< title> Document</ title>
< style>
p {
color : red;
font-size : 40px;
}
</ style>
</ head>
< body>
< p> hello world</ p>
< p> Aileen</ p>
< h1> 你好</ h1>
</ body>
</ html>
选择器+{一条/N条声明}
选择器(selector)决定针对谁修改使用:区分键值对,使用:区分键(property)和值(value) 声明决定修改啥 声明的属性是键值对, selector{ property:value }
CSS引入方式
内部样式表
将css嵌套到html中 (通过style)标签嵌套
行内样式表
外部样式表
1.创建一个css文件 2.使用 link 标签引入 css <link rel="stylesheet" href="/path/example.css">
<! DOCTYPE html >
< html lang = " en" >
< head>
< meta charset = " UTF-8" >
< meta name = " viewport" content = " width=device-width, initial-scale=1.0" >
< title> Document</ title>
< link rel = " stylesheet" href = " ./demo02.css" >
</ head>
< body>
< p> hello css</ p>
</ body>
</ html>
p {
color : crimson;
font-size : 80px;
}
Summary