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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Example of CSS3 column-rule Property Animation</title>
<style>
.animated {
	padding: 15px;
	border: 1px solid #000;	
 /* Chrome, Safari, Opera */
 -webkit-column-count: 3;
 -webkit-column-gap: 100px;
 -webkit-column-rule: 1px solid black;
 /* Firefox */
 -moz-column-count: 3;
 -moz-column-gap: 100px;
 -moz-column-rule: 1px solid black;
 /* Standard syntax */
 column-count: 3;
 column-gap: 100px;
 column-rule: 1px solid black;
 -webkit-animation: test 4s infinite; /* Chrome, Safari, Opera */
 animation: test 4s infinite;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes test {
 50% {-webkit-column-rule: 20px solid orange;}
}
/* Standard syntax */
@keyframes test {
 50% {column-rule: 20px solid orange;}
}
</style>
</head>
<body>
	Warning: CSS Animations do not work in Internet Explorer 9 and earlier versions. Firefox does not support animation on the column-rule property.
	Note: Among all the individual border properties only the column-rule-width, and column-rule-color properties are animatable in CSS. The column-rule-style property is not animatable. See the CSS <a href="https://www.appwang.com/css-reference/css3-column-rule-property.php" target="_top">column-rule</a> shorthand property for details.
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</body>
</html>