"bootstrap 4.1 Sidebar Navigation for mobile"
Bootstrap 4.1.1 Snippet by mrp3k

<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <nav class="navbar navbar-expand-md navbar-dark bg-dark sidebarNavigation" data-sidebarClass="navbar-dark bg-dark"> <div class="container-fluid"> <a class="navbar-brand" href="#">Navbar</a> <button class="navbar-toggler leftNavbarToggler" type="button" data-toggle="collapse" data-target="#navbarsExampleDefault" aria-controls="navbarsExampleDefault" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarsExampleDefault"> <ul class="nav navbar-nav nav-flex-icons ml-auto"> <li class="nav-item active"> <a class="nav-link" href="#">Home <span class="sr-only">(current)</span> </a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link disabled" href="#">Disabled</a> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="https://example.com" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a> <div class="dropdown-menu" aria-labelledby="dropdown01"> <a class="dropdown-item" href="#">Action</a> <a class="dropdown-item" href="#">Another action</a> <a class="dropdown-item" href="#">Something else here</a> </div> </li> </ul> <!-- <form class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search"> <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button> </form> --> </div> </div> </nav>
body{position:relative} .overlay,.sideMenu{position:fixed;bottom:0} .overlay{top:0;left:-100%;right:100%;margin:auto;background-color:rgba(0,0,0,.5);z-index:998;transition:all ease 0.2s} .overlay.open{left:0;right:0} .sidebarNavigation{margin-bottom:0;z-index:999;justify-content:flex-start} .sidebarNavigation .leftNavbarToggler{margin-right:10px;order:-1} .sideMenu{left:-100%;top:52px;transition:all ease 0.5s;overflow:hidden;width:100%;z-index:999;max-width:80%;margin-bottom:0;padding:1rem} .sideMenu.open{left:0;display:block;overflow-y:auto} .sideMenu ul{margin:0;padding:0 15px}
window.onload=function(){if(window.jQuery){$(document).ready(function(){$(".sidebarNavigation .navbar-collapse").hide().clone().appendTo("body").removeAttr("class").addClass("sideMenu").show();$("body").append("<div class='overlay'></div>");$(".navbar-toggle, .navbar-toggler").on("click",function(){$(".sideMenu").addClass($(".sidebarNavigation").attr("data-sidebarClass"));$(".sideMenu, .overlay").toggleClass("open");$(".overlay").on("click",function(){$(this).removeClass("open");$(".sideMenu").removeClass("open")})});$("body").on("click",".sideMenu.open .nav-item",function(){if(!$(this).hasClass("dropdown")){$(".sideMenu, .overlay").toggleClass("open")}});$(window).resize(function(){if($(".navbar-toggler").is(":hidden")){$(".sideMenu, .overlay").hide()}else{$(".sideMenu, .overlay").show()}})})}else{console.log("sidebarNavigation Requires jQuery")}}

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