为了使你的 CSS 易于阅读，你可以这样做

keyframes wink {
from { background-position: 0px; }
to { background-position: -500px; }
}
….

….
(function(){
var ss=document.getElementById(‘CSS3’).firstChild;
var re=/transition|transform|animation|keyframes/g;
var userAgent=window.navigator.userAgent;
var prefix=””;
if (userAgent.indexOf(“Firefox”)>=0) {
prefix=”-moz-“;
} else if (userAgent.indexOf(“WebKit”)>=0)
prefix=”-webkit-“;
ss.data=ss.data.replace(re,function(s){return prefix+s});
})();