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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"><link rel="stylesheet" href="../../cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"><body><div class="w3-sidebar w3-bar-block w3-light-grey w3-card" style="width:160px;"> <a href="#" class="w3-bar-item w3-button">Link 1</a> <button class="w3-button w3-block w3-left-align" onclick="myAccFunc()"> Accordion <i class="fa fa-caret-down"></i> </button> <div id="demoAcc" class="w3-hide w3-white w3-card"> <a href="#" class="w3-bar-item w3-button">Link</a> <a href="#" class="w3-bar-item w3-button">Link</a> </div> <div class="w3-dropdown-click"> <button class="w3-button" onclick="myDropFunc()"> Dropdown <i class="fa fa-caret-down"></i> </button> <div id="demoDrop" class="w3-dropdown-content w3-bar-block w3-white w3-card"> <a href="#" class="w3-bar-item w3-button">Link</a> <a href="#" class="w3-bar-item w3-button">Link</a> </div> </div> <a href="#" class="w3-bar-item w3-button">Link 2</a> <a href="#" class="w3-bar-item w3-button">Link 3</a></div><div class="w3-container" style="margin-left:160px"><h2>Sidebar Accordion</h2><p>In this example, we have added an accordion and a dropdown menu inside the side navigation.</p><p>Click on both to understand how they differ from each other. The accordion will push down the content, while the dropdown lays over the content.</p></div><script>function myAccFunc() { var x = document.getElementById("demoAcc"); if (x.className.indexOf("w3-show") == -1) { x.className += " w3-show"; x.previousElementSibling.className += " w3-green"; } else {