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<html><title>W3.CSS</title><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="4/w3.css"><body><div class="w3-container"> <h2>W3.CSS Modal</h2> <p>In this example we demonstrate how to close the modal by clicking outside of the modal box.</p> <button onclick="document.getElementById('id01').style.display='block'" class="w3-button w3-black">Open Modal</button> <div id="id01" class="w3-modal"> <div class="w3-modal-content w3-card-4"> <header class="w3-container w3-teal"> <span onclick="document.getElementById('id01').style.display='none'" class="w3-button w3-display-topright">×</span> <h2>Modal Header</h2> </header> <div class="w3-container"> <p>You have two options to close this modal:</p> <p>Click on the "x" or click anywhere outside of the modal!</p> </div> <footer class="w3-container w3-teal"> <p>Modal Footer</p> </footer> </div> </div></div><script>// Get the modalvar modal = document.getElementById('id01');// When the user clicks anywhere outside of the modal, close itwindow.onclick = function(event) { if (event.target == modal) { modal.style.display = "none"; }}</script></body>