试一试 - CSS Reference anim

<!DOCTYPE html>
<html>
<head>
<style> 
#myDIV {
    border: 1px solid black;
    /* Firefox */
    -moz-column-count: 3;
    -moz-column-rule: 1px outset red;
    /* Chrome, Safari, Opera */
    -webkit-column-rule: 1px outset red;
    -webkit-column-count: 3;
    -webkit-animation: mymove 5s infinite;
    /* Standard syntax */
    column-count: 3;
    column-rule: 1px outset red;
    animation: mymove 5s infinite;

}

/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
    50% {-webkit-column-rule: 50px outset blue; }
}

/* Standard syntax */
@keyframes mymove {
    50% {
        -moz-column-rule: 50px outset blue; /* Firefox */
        column-rule: 50px outset blue;
    }
}
</style>
</head>
<body>

<p>The column-rule property is a shorthand property for all column-rule properties.</p>
<p>The column-rule-color and column-rule-width properties are <em>animatable</em> in CSS.</p>
<p><b>Note:</b> CSS Animations do not work in Internet Explorer 9 and earlier versions.</p>

<p>Gradually change the rule between the columns:<p>
<div id="myDIV">
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</div>

</body>
</html>