React Js Fullscreen Modal Dialog

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
  <div id="app"></div>
  <script type="text/babel">
    const { useState } = React;
    function App() {
      const [isModalOpen, setIsModalOpen] = useState(false);

const openModal = () => {
        setIsModalOpen(true);
      };

const closeModal = () => {
        setIsModalOpen(false);
      };

const save = () => {
        alert('Successfully Saved');
        setIsModalOpen(false);
      };

return (
        <div className="container">
          <h3>React Js Fullscreen Modal Dialog</h3>
          <button className="modal-button" onClick={openModal}>
            Open Modal
          </button>
          <div className={`fullscreen-modal ${isModalOpen ? 'open' : ''}`}>
            <span className="top-close-button" onClick={closeModal}>
              &#10005;
            </span>
            <h2 className="modal-title">React Js Fullscreen Modal Content</h2>
            <p className="modal-text">This is the content of the fullscreen modal.</p>
            <div className="modal-action">
              <button className="bottom-close-button" onClick={closeModal}>
                Close
              </button>
              <button className="save-button" onClick={save}>
                Save
              </button>
            </div>
          </div>
        </div>
      );
    }

ReactDOM.render(<App />, document.getElementById('app'));
  </script>
  <style>
    body {
      background-color: #f1f1f1;
    }

.container {
      text-align: center;
      width: 600px;
      margin: 0 auto;
      padding: 20px;
    }
    /* Modal button styles */
    .modal-button {
      padding: 10px 20px;
      font-size: 16px;
      background-color: #007BFF;
      color: #fff;
      border: none;
      cursor: pointer;
      border-radius: 5px;
      outline: none;
    }

/* Fullscreen Modal Styles */
    .fullscreen-modal {
      position: fixed;
      bottom: -100%;
      /* Start the modal below the screen */
      left: 0;
      width: 100%;
      height: 100%;
      background-color: #fff;

z-index: 999;
      overflow: hidden;
      transition: bottom 0.5s ease-in-out;
      /* Add transition here */
    }
   /* Modal open styles */
    .fullscreen-modal.open {
      bottom: 0;
      /* Show the modal by moving it to the top */
    }

/* Close button at the top right corner */
    .top-close-button {
      position: absolute;
      top: 10px;
      right: 25px;
      font-size: 24px;
      color: #888;
      cursor: pointer;
    }

/* Modal title */
    .modal-title {
      font-size: 24px;
      margin-top: 20px;
      color: #333;
    }

/* Modal text */
    .modal-text {
      font-size: 18px;
      margin-top: 10px;
      color: #666;
    }

/* Modal action buttons */
    .modal-action {
      position: absolute;
      bottom: 10px;
      right: 25px;
    }

/* Close button at the bottom */
    .bottom-close-button {
      padding: 10px 20px;
      font-size: 16px;
      background-color: #ddd;
      color: #333;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      margin-right: 10px;
    }

/* Save button */
    .save-button {
      padding: 10px 20px;
      font-size: 16px;
      background-color: #007BFF;
      color: #fff;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }
  </style>
</body>

</html>