HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <title>escaped class</title>
  <style>
    .\31 23item {
      background: #fef08a;
      padding: 0.35rem 0.5rem;
    }
  </style>
</head>
<body>
  <p class="123item">Class starts with digits.</p>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

CSS Class Selector — escaped name