<!DOCTYPE html>
<meta charset="utf-8">
<html lang="en">
<head>
  <title>initial-letter width test</title>
  <style>
    span {
      position: absolute;
      color: transparent;
    }
    #control {
      background-color: green;
    }
  </style>
</head>
<body>
  <p>There should be no red</p>
  <span id="control">Test.</span>
</body>
</html>