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Regarding the issue of adding logo to web pages_html/css_WEB-ITnose

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Release: 2016-06-24 12:05:23
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Beginner to learn HTML, CSS and JS
I downloaded the raindrop background special effect code from the Internet. I want to change it by myself and add a logo in the middle, but I have tried a lot and failed, so I asked for advice =. =
I know I'm stupid.
The following is the raindrop code

<html>	<head>	<title>逼真全屏雨滴插件rainyday</title>		<style media="screen" type="text/css">			img { display: none; }			body { overflow: hidden; }			#canvas { position: absolute; top: 0px; left: 0px; }		</style>		<script src="rainyday.js" type="text/javascript"></script>		<script type="text/javascript"> 			function demo() {				var engine = new RainyDay('canvas','demo1', window.innerWidth, window.innerHeight);				engine.gravity = engine.GRAVITY_NON_LINEAR;				engine.trail = engine.TRAIL_DROPS;				engine.rain([					engine.preset(0, 2, 500)				]);				engine.rain([					engine.preset(3, 3, 0.88),					engine.preset(5, 5, 0.9),					engine.preset(6, 2, 1),				], 100); 			}		</script>	</head>	<body onload="demo();">		<img id="demo1" src="data:image/jpeg;base64/>		<div id="cholder">			<canvas id="canvas"></canvas>		</div>        	</body></html>
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The JS code will not be posted. Please take a look and guide me


Reply to discussion (solution)

Is it because it is a demo and cannot be added?

Use positioning to press up!

Use positioning to press up!

Try it later=. =

Use positioning to press up!

Although it doesn’t seem possible. But I solved it myself^.^
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