<!DOCTYPE html>
<html>
<head>
<style>
    #image-shape {
        float: left;
        background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100px' height='50px'><rect x='0' y='0' width='100' height='50' fill='rgba(0,0,100, 0.3)'/></svg>");
        background-repeat: no-repeat;
        width: 100px; 
        height: 50px; 
    }
</style>
</head>
<body>
  <p>The green "Hello World" should appear on top of the blue rectangle.</p>
  <div style="color: green">
      <div id="image-shape">Hello World</div>
  </div>
</body>
</html>