烟花效果
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<!DOCTYPE html><!-- saved from url=http://keyup.cn --><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta content="width=device-width,height=device-height,inital-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport"><meta name="apple-mobile-web-app-capable" content="yes"><meta name="apple-mobile-web-app-status-bar-style" content="black"><title>烟花</title><style type="text/css">html,body{height:100%;margin:0;padding:0}ul,li{text-indent:0;text-decoration:none;margin:0;padding:0}img{border:0}body{background-color:#000;color:#999;font:100%/18px helvetica, arial, sans-serif}canvas{cursor:crosshair;display:block;left:0;position:absolute;top:0;z-index:20}#header img{width:100%; height:20%;}#bg img{width:100%; height:80%;}#header,#bg{position:fixed;left:0;right:0;z-index:10}#header{top:0}#bg{position:fixed;z-index:1;}audio{position:fixed;display:none;bottom:0;left:0;right:0;width:100%;z-index:5}</style><link rel="shortcut icon" type="image/x-icon" href=""><style type="text/css"></style><style id="style-1-cropbar-clipper">.en-markup-crop-options { top: 18px !important; 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