<!DOCTYPE html>
<html>
<head>
  <style>
    div {
      background-image: url("data:image/svg+xml, \
      <svg xmlns='http://www.w3.org/2000/svg'> \
        <rect width='75' height='75' fill='yellow'/> \
        <rect width='50' height='50' fill='lime'/> \
        <rect width='25' height='25' fill='red'/> \
      </svg>");
      width: 75px;
      height: 75px;
    }
  </style>
</head>
<body>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
</body>
</html>