<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>烟花动画特效</title>
<style>
html,
body {
margin: 0px;
width: 100%;
height: 100%;
overflow: hidden;
background: #000;
}
#canvas {
width: 100%;
height: 100%;
}
* {
margin: 0;
padding: 0;
}
.wrap {
width: 600px;
height: 400px;
margin: 200px auto;
}
.box {
width: 200px;
hei
