The :before and :after selectors in CSS is used to add content before and after an element. The :hover is pseudo-class and :before & :after are pseudo-elements. In CSS, pseudo-elements are written after pseudo-class.
Syntax:
a:hover::before {
// CSS Property
}
a:hover::after {
// CSS Property
}In CSS3 double colon(::) is used to denote pseudo-element. For IE8 or older use a single colon (CSS2 syntax) is used.
Example 1: This example uses :hover condition for a:before and a:after in an element.
html
<!DOCTYPE html>
<html>
<head>
<title>
:hover condition for a:before
and a:after
</title>
<style>
a:hover::before {
content: "Before -";
}
a:hover::after {
content: "-after";
}
</style>
</head>
<body>
<a href="#" > Hover here </a>
</body>
</html>
|
Output:
HTML Before Mouse move over:
After Mouse move over:
Example 2: This example uses :hover condition for a:before and a:after in an element.
html
<!DOCTYPE html>
<html>
<head>
<title>
:hover condition for a:before
and a:after
</title>
<style>
a:hover::before {
content: "Before -";
background-color: green;
}
a:hover::after{
content: "-after";
background-color: green;
}
</style>
</head>
<body>
<a href="#" > GeeksForGeeks </a>
</body>
</html>
|
Output:
HTML Before Mouse move over:
After Mouse move over :
CSS is the foundation of webpages, is used for webpage development by styling websites and web apps.You can learn CSS from the ground up by following this CSS Tutorial and CSS Examples.