cubic-bezier(0.31, 0.28, 0.34, 0.34)
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>心雨</title>
<style>
body,html{
height: 100%;
background-color:#090909f2;
}
.content{
position: relative;
height: 100%;
background-color: #090909f2;
overflow: hidden;
}
.item{
opacity: 0;
position: absolute;
animation: drops 1s cubic-bezier(0.31, 0.28, 0.34, 0.34) infinite;
width: 250px;
height: 250px;
background: url("img/heart.png") no-repeat;
background-size: auto 250px;
}
@keyframes drops {
0%{
opacity: 0;
}
20%{
opacity: 1;
}
90%{
opacity: 1;
}
100%{
opacity: 0;
transform: translate3d(10px,100vh,-10px);
}
}
</style>
</head>
<body>
<div class="content">
<div class="item"></div>
</div>
<script src="js/jquery-1.9.1.min.js"></script>
<script>
var content=$(".content");
var initNum=0;
for(var i=0;i<30;i++){
var left=(Math.floor(Math.random()*10+10));
var delay=(Math.floor(Math.random()*120+10))/10;
console.log(left);
initNum+=left;
var div=$('<div/>').addClass('item').css({
"left":initNum+"%",
"top":left+"%",
"animation-delay":delay+"s"
});
content.append(div);
}
</script>
</body>
</html>
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