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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <h2>Modal window example 4</h2>

<button class="modal__show">Show Modal</button>

<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nostrum error, odit <a href="#">aperiam</a> aliquid distinctio sapiente amet, ratione mollitia expedita tempore necessitatibus <a href="#">odio</a> esse! Doloribus laboriosam voluptate fugit, <a href="#">ullam</a> pariatur ab?</p>

  <li><a href="#">Element 1</a></li>
  <li><a href="#">Element 2</a></li>
  <li><a href="#">Element 3</a></li>
  <li><a href="#">Element 4</a></li>
  <li><a href="#">Element 5</a></li>
  <li><a href="#">Element 6</a></li>
  <li><a href="#">Element 7</a></li>
  <li><a href="#">Element 8</a></li>
  <li><a href="#">Element 9</a></li>
  <li><a href="#">Element 10</a></li>

<div class="modal" id="modal" tabindex="0" role="dialog" aria-labelled-by="modaltitle">
  <div class="modal__content">
    <h2 id="modal_title">Modal</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Impedit qui, iusto numquam harum est officiis voluptate animi eligendi, incidunt saepe dolore. <a href="#">Adipisci</a> quos odio, optio aspernatur ex quae excepturi repudiandae.</p>
    <form action="#">
        <label for="firstname">First name</label>
        <input type="text" id="firstname" />
        <label for="lastname">First name</label>
        <input type="text" id="lastname" />

    <button class="modal__close">
    </button> <!-- .modal__close -->
  </div> <!-- .modal__content -->
</div> <!-- .modal -->
              .modal {
  background-color: rgba(0,0,0,0.5);

  height: 100vh;
  width: 100vw;

  position: absolute;
  left: 0;
  top: 0;

  display: none;

.modal--visible {
  display: flex;
  justify-content: center;
  align-items: center;

.modal__content {
  background-color: rgb(255, 255, 255);
  height: 70%;
  width: 70%;
  padding: 2rem;

  position: relative;

.modal__close {
  background-color: #000000;
  position: absolute;
  right: -1rem;
  top: -1rem;
  color: #ffffff;

:focus {
  outline: 4px solid #FF0000;
              // Button to trigger the modal window
var button = document.querySelector('.modal__show');
// Variable for storing the last focused element
var lastFocusedElement;
// Close button in modal window
var closeButton = document.querySelector('.modal__close')

// Open modal window on click
button.addEventListener('click', showModal);

// Show Mmdal
function showModal() {
  // Close all open modal windows
  // Store the last focused element
  lastFocusedElement = document.activeElement;
  // Select the modal window
  var modal = document.getElementById('modal');
  // Show the window
  // Find all focusable children
  var focusableElementsString = 'a[href], area[href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), button:not([disabled]), iframe, object, embed, [tabindex="0"], [contenteditable]';
  var focusableElements = modal.querySelectorAll(focusableElementsString);
  // Convert NodeList to Array
  focusableElements = Array.prototype.slice.call(focusableElements);

  // The first focusable element within the modal window
  var firstTabStop = focusableElements[0];
  // The last focusable element within the modal window
  var lastTabStop = focusableElements[focusableElements.length - 1];
  // Focus the window
  // Add keydown event
  modal.addEventListener('keydown', function(e) {
    // Listen for the Tab key
    if (e.keyCode === 9) {
      // If Shift + Tab
      if (e.shiftKey) {
        // If the current element in focus is the first focusable element within the modal window...
        if (document.activeElement === firstTabStop) {
          // ...jump to the last focusable element
      // if Tab
      } else {
        // If the current element in focus is the last focusable element within the modal window...
        if (document.activeElement === lastTabStop) {
          // ...jump to the first focusable element
    // Close the window by pressing the Esc-key
    if(e.keyCode === 27) {

// Close the window by clicking the close button
document.querySelector('.modal__close').addEventListener('click', removeModal);

// Remove the modal window if it's visible
function removeModal() {
  var visibleClass = 'modal--visible';
  if (document.querySelector('.' + visibleClass)) {
    document.querySelector('.' + visibleClass).classList.remove(visibleClass);
    // Return the focus to the last focused element

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