css brother selector + and ~
The Adjacent sibling selector can select the element immediately after another element, and both have the same parent element.
There are two kinds of + and ~, such as (.h1+p and .h1 ~p). The difference between the two is that + only selects the next p element. And ~ selects all p elements behind.
+:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<style>
h1+p{
color: blue;
}
</style>
<body>
<div class="father">
<h1>我是一个标题</h1>
<p>我是一个段落</p>
<p>我是一个段落</p>
<p>我是一个段落</p>
<h2>我是一个标题</h2>
<p>我是一个段落</p>
<p>我是一个段落</p>
<p>我是一个段落</p>
</div>
</body>
</html>
The effect is as follows:
~:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<style>
h1~p{
color: blue;
}
</style>
<body>
<div class="father">
<h1>我是一个标题</h1>
<p>我是一个段落</p>
<p>我是一个段落</p>
<p>我是一个段落</p>
<h2>我是一个标题</h2>
<p>我是一个段落</p>
<p>我是一个段落</p>
<p>我是一个段落</p>
</div>
<div>
<p>我是一个段落</p>
<p>我是一个段落</p>
</div>
</body>
</html>
The effect is as follows:
that is, + means next to each other, and ~ emphasizes all elements. .