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<html><title>W3.CSS</title><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="https://www.w3schools.com/w3css/5/w3.css"><body><div class="w3-container"> <h2>W3.CSS Modal Image Gallery</h2> <p>Click on the images to display them in full size.</p></div><div class="w3-row-padding"> <div class="w3-container w3-third"> <img src="img_snowtops.jpg" style="width:100%;cursor:pointer" onclick="onClick(this)" class="w3-hover-opacity"> </div> <div class="w3-container w3-third"> <img src="img_lights.jpg" style="width:100%;cursor:pointer" onclick="onClick(this)" class="w3-hover-opacity"> </div> <div class="w3-container w3-third"> <img src="img_mountains.jpg" style="width:100%;cursor:pointer" onclick="onClick(this)" class="w3-hover-opacity"> </div></div><div id="modal01" class="w3-modal" onclick="this.style.display='none'"> <span class="w3-button w3-hover-red w3-xlarge w3-display-topright">×</span> <div class="w3-modal-content w3-animate-zoom"> <img id="img01" style="width:100%"> </div></div><script>function onClick(element) { document.getElementById("img01").src = element.src; document.getElementById("modal01").style.display = "block";}</script> </body></html>