<!DOCTYPE html>
<html>
<head>
<style>
#img1 { filter: drop-shadow(-8px -8px 10px gray);
}
#img2 { filter: drop-shadow(-10px -10px 7px lightblue);
}
</style>
</head>
<body>
<h1>drop-shadow() 函数</h1>
<p>drop-shadow(-8px -8px 10px gray):</p>
<img id="img1" src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300">
<p>drop-shadow(-10px -10px 7px lightblue):</p>
<img id="img2" src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300">
<p>原始图像：</p>
<img src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300">
</body>
</html>