HTML Code

<!DOCTYPE html>
<html>
<head>
  <title>CSS :empty List Example</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      padding: 1.5rem;
    }

    .todo-list {
      list-style: none;
      padding: 0;
      max-width: 20rem;
    }

    .todo-list li {
      padding: 0.5rem 0;
      border-bottom: 1px solid #e2e8f0;
    }

    .todo-list li:empty {
      display: none;
    }
  </style>
</head>
<body>
  <h1>My Tasks</h1>
  <ul class="todo-list">
    <li>Buy groceries</li>
    <li></li>
    <li>Walk the dog</li>
    <li></li>
  </ul>
</body>
</html>

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CSS :empty Selector - Hide Empty List Items