The role of a:active in CSS and detailed explanation of its use
CSS :active selector
Definition and usage
:active selector is used to select active links.
When you click on a link, it becomes active.
Tip: Please use the :link selector to style links to unvisited pages, :visited to style links to visited pages, and the :hover selector to set the mouse pointer to float to the link. Last style.
Example 1 Select unvisited, visited, floating and active links and set their styles:
a:link{color:blue;}
a:visited{color:blue;}
a:hover{color:red;}
a:active{color:yellow;}Example 2 Set different styles for links:
a.ex1:hover,a.ex1:active {color:red;}
a.ex2:hover,a.ex2:active {font-size:150%;}Definition The link's style when the mouse is activated (clicked). There are four link pseudo-classes:
a:link normal link style a:visited link visited style a:hover link highlighted (mouse over) style a:active link activated style
Example:
<!DOCTYPE html>
<html>
<head>
<style>
a:active
{
background-color:yellow;
}
</style>
</head>
<body>
<a href="http://www.w3school.com.cn">W3Sschool</a>
<a href="http://www.google.com">Google</a>
<a href="http://www.wikipedia.org">Wikipedia</a>
<p><b>注释：</b>:active 选择器为活动的链接设置样式。</p>
</body>
</html>The result is: W3Sschool Google Wikipedia
Comments: The :active selector styles active links.
Define the style of the link when the mouse is activated (clicked). There are four link pseudo-classes:
a:link normal link style a:visited link visited style a:hover link highlighted (mouse over) style a:active link activated style
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