Tag, Wildcard selector
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>标签选择器</title>
<style type="text/css">
<!--
body:标签选择器
*：通配符选择器
.：类选择器
，：并集选择器
CSS属性：
Text-align Center,left,right 文字居中格式
Font-size 18px 设置文字大小
Font-family 微软雅黑,宋体 设置字体
Font-weight Normal默认，bold粗体，100px 设置字体加粗
Font-style Normal默认，italic斜体 设置字体风格
Color 颜色 设置文字颜色
-->
body{
background:url("xia.jpg");
}
p{
font-size:50px;
color:green;
background-color:blue;
width:300px;
height:200px;
}
*{
font-size: 100px;
color: red;
}
</style>
</head>
<body>
<h1 id="">111</h1>
<p>14期威武</p>
</body>
</html>Class selector
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.G{
font-size: 200px;
color:red;
}
.o1{
font-size: 200px;
color: blue;
}
.o2{
font-size: 200px;
color: yellow;
}
.g1{
font-size: 200px;
color: green;
}
.l{
font-size: 200px;
color: pink;
}
.e{
font-size: 200px;
color: black;
}
</style>
</head>
<body>
<span class="G">G</span>
<span class="o1">o</span>
<span class="o2">o</span>
<span class="g1">g</span>
<span class="l">l</span>
<span class="e">e</span>
</body>
</html>Compound selector: Intersection selector
selector + selector (no space in between)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.box{
font-size:50px;
}
p.box{
color:red;
}
p#miss{
width: 400px;
height: 300px;
background-color:yellow;
}
</style>
</head>
<body>
<!--其实无非是浏览器寻找标签顺序，第一个找到p.box即可；第二个找到
.box类即可
-->
<p class="box">14期威武</p>
<p class="box">14期霸气</p>
<p id="miss">14期万岁</p>
</body>
</html>Descendant selector and descendant selector: actually contain Relationship
Descendant selector: can be inherited across generations Selector + space + selector
Descendant selector: Can only find the first descendant Selector+>+Selector
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.box span{
color:red;
}
</style>
</head>
<body>
<!--
下面p标签会找到.box类，由于span是后代选择器选择对象，即使隔代也可继承，所以p标签
下面的span标签也可继承
-->
<p class="box">
<p><span class="miss">14期威武</span>
<span>14期好人</span>
</p>
</p>
<p class="box"><span>14霸气</span></p>
</body>
</html>rrreeThe above is the detailed content of Summary of the use of selectors in css. For more information, please follow other related articles on the PHP Chinese website!
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