Collapsible Sidebar Menu Creation

Netbax Online Editor Try it Yourself

<div id="side" class="off" style="width: 0%;">
    <a href="javascript:void(0)" class="close" onclick="closeside()">×</a>
<a href="www.example.com" target="_blank">Home</a>
      <a href="www.example.com" target="_blank">Forum</a>
      <a href="www.example.com" target="_blank">Login</a>
      <a href="www.example.com" target="_blank">Comment</a>
  </div>
<button onclick="openside()">☰ Open Sidebar</button>
<style>
.sidebar {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 3;
    top: 0;
    left:0;
    background-color: #ff3800;
    overflow-y: auto;
    overflow-x: hidden;
    text-align: center;
    opacity:0;
    transition: opacity 1s;
}
.off {
    height: 100%;
    width: 0;
    top: 0;
    left: 0;
    background-color: #ff3800;
    position: fixed;
    z-index: 3;
    overflow-x: hidden;
    transition: .5s;
    padding-top: 60px;
}
.off a {
    padding: 8px 8px 8px 32px;
    text-decoration: none !important;
    font-size: 25px;
    color: #fff;
    display: block;
    transition: .3s
}
.off a:hover, .offcanvas a:focus{
    color: #777;
}
.close {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px !important;
    margin-left: 50px;
}
#baxside {
    transition: margin-left .5s;
}
@media screen and (max-height: 500px) {
  .off {padding-top:15px;}
  .off a {font-size: 18px;}
}

</style>