<!DOCTYPE html>
<html lang="hi">
<head>
  <style>
   p:first-letter { color: red; }
  </style>
  <title>Devanagari first-letter 1</title>
</head>
<body>
  <p>&#x935;&#x93F;&#x915;&#x93F;&#x92A;&#x940;&#x921;&#x93F;&#x92F;&#x93E;</p>
</body>
</html>