In CSS, focus means "focus" and is a pseudo-class selector, which is used to select the element that has the focus; the ":focus" selector can be used to set styles for the element that has the focus. The syntax is "element:focus{css style code;}".
The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.
What does focus mean in css style?
In css, focus means focus, which usually means ":focus" selection The ":focus" selector is used to select the focused element. The :focus selector is allowed on elements that receive keyboard events or other user input.
The example is as follows:
<html>
<head>
<style>
input:focus
{
background-color:yellow;
}
</style>
</head>
<body>
<p>在文本框中点击，您会看到黄色的背景：</p>
<form>
First name: <input type="text" name="firstname" /><br>
Last name: <input type="text" name="lastname" />
</form>
<p><b>注释：</b>如果 :focus 用于 IE8 ，则必须声明 <!DOCTYPE>。</p>
</body>
</html>Output result:
(Learning video sharing: css video tutorial)
The above is the detailed content of What does focus mean in css style?. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
