Modal Opened by Multiple Triggers

<!-- HTML Structure -->
<div id="myModal" class="modal">
  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">&times;</span>
    <p>Some text in the Modal..</p>
  </div>
</div>

<button class="modal-trigger">Open Modal</button>
<button class="modal-trigger">Open Modal Too</button>

/* CSS for the Modal */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1; /* Sit on top */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  overflow: auto; /* Enable scroll if needed */
  background-color: rgb(0,0,0); /* Fallback color */
  background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

.modal-content {
  background-color: #fefefe;
  margin: 15% auto; /* 15% from the top and centered */
  padding: 20px;
  border: 1px solid #888;
  width: 80%; /* Could be more or less, depending on screen size */
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}

// JavaScript to open modal with multiple triggers
// Event delegation is used to minimize the number of event listeners

document.addEventListener('click', function(event) {
  if (event.target.classList.contains('modal-trigger')) {
    document.getElementById('myModal').style.display = 'block';
  }
});

document.querySelector('.close').onclick = function() {
  document.getElementById('myModal').style.display = 'none';
};

window.onclick = function(event) {
  if (event.target == document.getElementById('myModal')) {
    document.getElementById('myModal').style.display = 'none';
  }
};