out-of-range
CSS :out-of-range Pseudo Class
The :out-of-range pseudo-class styles the elements that have range limitations when the value of the element is outside the specified range.
The :out-of-range selector only works for <input> elements with min and/or max attributes. （和/或最大属性。）
Version
Version （版本）
Selectors Level 4 （选择器级别4）
Syntax
Syntax （语法）
:out-of-range {
css declarations;
}
Example of the :out-of-range selector:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
input:out-of-range {
border: 3px solid #8ebf42;
}
</style>
</head>
<body>
<h2>:out-of-range selector example</h2>
<form>
<input type="number" min="1" max="12" value="15">
</form>
</body>
</html>