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<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<head>
<style>
body, html {
width: 100%;
height: 100%;
margin: 0;
}
img {
opacity: 0;
transition: opacity 1s ease-in-out;
}
div, img {
width: 215px;
height: 174px;
position: absolute;
top: 0;
left: 0;
}
div {
background: red;
}
</style>
<script>
addEventListener("load", () => {
setTimeout(() => document.querySelector("img").style.opacity = 1, 500);
});
</script>
</head>
<body>
<div></div>
<img src="icon.png"></img>
</body>
</html>
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