HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>Toggle visibility</title>

  <style>

    body {

      font-family: system-ui, sans-serif;

      padding: 24px;

      background: #f8fafc;

      color: #334155;

    }



    .card {

      max-width: 320px;

      padding: 1rem;

      border: 1px solid #cbd5e1;

      border-radius: 0.5rem;

      background: #fff;

    }



    .details {

      margin-top: 0.75rem;

      padding: 0.75rem;

      border-radius: 0.35rem;

      background: #eff6ff;

      color: #1e40af;

      visibility: hidden;

    }



    .card.is-open .details {

      visibility: visible;

    }



    button {

      margin-top: 0.75rem;

      padding: 0.45rem 0.85rem;

      border: none;

      border-radius: 0.35rem;

      background: #2563eb;

      color: #fff;

      font: inherit;

      cursor: pointer;

    }

  </style>

</head>

<body>

  <div class="card" id="card">

    <strong>Pro plan</strong>

    <div class="details">Includes priority support and extra storage.</div>

    <button type="button" id="toggle">Show details</button>

  </div>

  <script>

    const card = document.getElementById('card');

    const btn = document.getElementById('toggle');

    btn.addEventListener('click', () => {

      card.classList.toggle('is-open');

      btn.textContent = card.classList.contains('is-open') ? 'Hide details' : 'Show details';

    });

  </script>

</body>

</html>

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CSS visibility Property - Toggle with Class