伪类选择器
常用的几种伪类选择器。
伪类选择器一般会用在超链接a标签中
没有访问的超链接a标签样式：
a:link {
color: blue;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Title</title>
<style type="text/css">
.box ul li.item1 a:link{
color: red;
}
</style>
</head>
<body>
<div class="box">
<ul>
<li class="item1">
<a href="#">jack</a>
</li>
<li class="item2">
<a href="#">ben</a>
</li>
<li class="item3">
<a href="#">peter</a>
</li>
</ul>
</div>
</body>
</html>
访问过的超链接a标签样式：
a:visited {
color: gray;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Title</title>
<style type="text/css">
.box ul li.item1 a:visited{
color: green;
}
</style>
</head>
<body>
<div class="box">
<ul>
<li class="item1">
<a href="#">jack</a>
</li>
<li class="item2">
<a href="#">ben</a>
</li>
<li class="item3">
<a href="#">peter</a>
</li>
</ul>
</div>
</body>
</html>
点击jack字体， jack字体变成绿色
鼠标悬停时在元素上应用样式
a:hover {
background-color: #eee;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Title</title>
<style type="text/css">
.box ul li.item1 a:hover{
color: green;
}
</style>
</head>
<body>
<div class="box">
<ul>
<li class="item1">
<a href="#">jack</a>
</li>
<li class="item2">
<a href="#">ben</a>
</li>
<li class="item3">
<a href="#">peter</a>
</li>
</ul>
</div>
</body>
</html>
鼠标悬停时在 a标签jack上面 jack字体马上变成绿色
鼠标点住瞬间的样式：
a:active {
color: green;
}
鼠标点住CSS样式改变，鼠标一放手就恢复原来的CSS样式
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Title</title>
<style type="text/css">
.box ul li.item1 a:active{
color: red;
}
</style>
</head>
<body>
<div class="box">
<ul>
<li class="item1">
<a href="#">jack</a>
</li>
<li class="item2">
<a href="#">ben</a>
</li>
<li class="item3">
<a href="#">peter</a>
</li>
</ul>
</div>
</body>
</html>