:focus
:focus selector is used to applying a required style when a form element got to focus like button, link, input box. An element can get focus using mouse or using tab key. A focus remains on the element until another element gets focus.
:active
:active selector is used to indicating that an anchor tag is active or a button is active. When the mouse is down, active selector applies and remains applied till the mouse is down.
Example
Following the example, shows usage of :focus as well as :active selector on button and link.
<!DOCTYPE html>
<html>
<head>
<title>Selector Example</title>
<style>
button {
border: 2px solid black;
}
button:focus {
border: 2px dotted red;
}
a {
color: black;
}
a:active {
color: red;
}
</style>
</head>
<body>
<button type="submit">Focus Me</button>
<a href="#">Active Me</a>
</body>
</html>Output
