Sidebar

-------------------------------- */
.cd-side-nav {
  position: absolute;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  padding: 45px 0 0;
  background-color: #21304F;
  visibility: hidden;
  opacity: 0;
  max-height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-transition: opacity 0.2s 0s, visibility 0s 0.2s;
  -moz-transition: opacity 0.2s 0s, visibility 0s 0.2s;
  transition: opacity 0.2s 0s, visibility 0s 0.2s;
}
.cd-side-nav.nav-is-visible {
  opacity: 1;
  visibility: visible;
  overflow: visible;
  -webkit-overflow-scrolling: touch;
  -webkit-transition: opacity 0.2s 0s, visibility 0s 0s;
  -moz-transition: opacity 0.2s 0s, visibility 0s 0s;
  transition: opacity 0.2s 0s, visibility 0s 0s;
  max-height: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}
.cd-side-nav > ul {
  padding: 0.6em 0;
}
.cd-side-nav > ul:last-of-type {
  padding-bottom: 0;
}
.cd-side-nav .cd-label, .cd-side-nav a {
  display: block;
  padding: 1em 5%;
}
.cd-side-nav .cd-label {
  text-transform: uppercase;
  font-weight: bold;
  color: #646a6f;
  font-size: 1rem;
  letter-spacing: .1em;
}
.cd-side-nav a {
  position: relative;
  color: #ffffff;
  font-size: 1.4rem;
}
.cd-side-nav ul.cd-top-nav > li:last-of-type > a {
  border-bottom: none;
}
.cd-side-nav > ul > li > a {
  padding-left: calc(5% + 24px);
  border-bottom: 1px solid #373d44;
}
.cd-side-nav > ul > li > a::before {
  /* icon before item name */
  position: absolute;
  content: '';
  left: 5%;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  -moz-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  -ms-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  -o-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  height: 16px;
  width: 16px;
  background: url(../img/cd-nav-icons.svg) no-repeat 0 0;
}
.cd-side-nav > ul > li.overview > a::before {
  background-position: -64px 0;
}
.cd-side-nav > ul > li.notifications > a::before {
  background-position: -80px 0;
}
.cd-side-nav > ul > li.comments > a::before {
  background-position: -48px 0;
}
.cd-side-nav > ul > li.bookmarks > a::before {
  background-position: -32px 0;
}
.cd-side-nav > ul > li.images > a::before {
  background-position: 0 0;
}
.cd-side-nav > ul > li.users > a::before {
  background-position: -16px 0;
}
.cd-side-nav .count {
  /* notification badge */
  position: absolute;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  -moz-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  -ms-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  -o-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
  right: calc(5% + 16px + 0.4em);
  padding: 0.2em 0.4em;
  background-color: #ff7e66;
  border-radius: .25em;
  color: #ffffff;
  font-weight: bold;
  font-size: 1.2rem;
  text-align: center;
}
.cd-side-nav .action-btn a {
  display: block;
  margin: 0 5%;
  padding: 1em 0;
  background-color: #1784c7;
  border-radius: .25em;
  border: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  text-align: center;
  color: #ffffff;
  font-weight: bold;
}
.cd-side-nav .action-btn a::before {
  display: none;
}
@media only screen and (min-width: 768px) {
  .cd-side-nav {
    position: relative;
    float: left;
    top: auto;
    width: 110px;
    min-height: 100vh;
    padding-top: 55px;
    /* reset style */
    visibility: visible;
    opacity: 1;
    overflow: visible;
    max-height: none;
  }
  .cd-side-nav.nav-is-visible {
    box-shadow: none;
  }
  .cd-side-nav.is-fixed {
    position: fixed;
  }
  .cd-side-nav > ul {
    /* reset style */
    padding: 0;
  }
  .cd-side-nav .cd-label {
    /* remove labels on minified version of the sidebar */
    display: none;
  }
  .cd-side-nav a {
    font-size: 1.2rem;
    text-align: center;
  }
  .cd-side-nav > ul > li > a {
    padding: calc(2.2em + 24px) 0 2.4em;
  }
  .cd-side-nav > ul > li > a::before {
    left: 50%;
    right: auto;
    -webkit-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -moz-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -ms-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -o-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    top: 2.4em;
  }
  .cd-side-nav .active > a {
    /* current page */
    box-shadow: inset 3px 0 0 #1784c7;
    background-color: #33383e;
  }
  .cd-side-nav .action-btn a {
    margin: 1em 10% 0;
  }
  .cd-side-nav .count {
    height: 8px;
    width: 8px;
    border-radius: 50%;
    box-shadow: 0 0 6px rgba(0, 0, 0, 0.2);
    padding: 0;
    top: 2em;
    -webkit-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -moz-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -ms-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -o-transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    transform: translateX(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    left: calc(50% + 5px);
    right: auto;
    color: transparent;
  }
}
@media only screen and (min-width: 1170px) {
  .cd-side-nav {
    width: 200px;
  }
  .cd-side-nav > ul {
    padding: 0.6em 0;
  }
  .cd-side-nav > ul > li:not(.action-btn):hover > a {
    background-color: #33383e;
  }
  .cd-side-nav > ul > li > a {
    padding: 1em 1em 1em 42px;
    text-align: left;
    border-bottom: none;
  }
  .cd-side-nav > ul > li > a::before {
    top: 50%;
    bottom: auto;
    -webkit-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -moz-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -ms-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -o-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    left: 18px;
  }
  .cd-side-nav .cd-label {
    display: block;
    padding: 1em 18px;
  }
  .cd-side-nav .action-btn {
    text-align: left;
  }
  .cd-side-nav .action-btn a {
    margin: 0 18px;
  }
  .no-touch .cd-side-nav .action-btn a:hover {
    background-color: #1a93de;
  }
  .cd-side-nav .count {
    /* reset style */
    color: #D1D1D1;
    height: auto;
    width: auto;
    border-radius: .25em;
    padding: .2em .4em;
    top: 50%;
    bottom: auto;
    -webkit-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -moz-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -ms-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    -o-transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    transform: translateY(-50 <img rel="usm" src="/smiles/shock.gif" border="0" align="absmiddle" alt="%)" /> ;
    right: 18px;
    left: auto;
    box-shadow: none;
  }
}

<nav class="cd-side-nav">
<ul>
<li class="cd-label">Main</li>
<li class="has-children overview">
<a href="#0">Overview</a>

<ul>
<li><a href="#0">All Data</a></li>
<li><a href="#0">Category 1</a></li>
<li><a href="#0">Category 2</a></li>
</ul>
</li>
<li class="has-children notifications active">
<a href="#0">Notifications<span class="count">3</span></a>

<ul>
<li><a href="#0">All Notifications</a></li>
<li><a href="#0">Friends</a></li>
<li><a href="#0">Other</a></li>
</ul>
</li>

<li class="has-children comments">
<a href="#0">Comments</a>

<ul>
<li><a href="#0">All Comments</a></li>
<li><a href="#0">Edit Comment</a></li>
<li><a href="#0">Delete Comment</a></li>
</ul>
</li>
</ul>

<ul>
<li class="cd-label">Secondary</li>
<li class="has-children bookmarks">
<a href="#0">Bookmarks</a>

<ul>
<li><a href="#0">All Bookmarks</a></li>
<li><a href="#0">Edit Bookmark</a></li>
<li><a href="#0">Import Bookmark</a></li>
</ul>
</li>
<li class="has-children images">
<a href="#0">Images</a>

<ul>
<li><a href="#0">All Images</a></li>
<li><a href="#0">Edit Image</a></li>
</ul>
</li>

<li class="has-children users">
<a href="#0">Users</a>

<ul>
<li><a href="#0">All Users</a></li>
<li><a href="#0">Edit User</a></li>
<li><a href="#0">Add User</a></li>
</ul>
</li>
</ul>

<ul>
<li class="cd-label">Action</li>
<li class="action-btn"><a href="#0">+ Button</a></li>
</ul>
</nav>



<div class="content-wrapper">
<h1>Responsive Sidebar Navigation</h1>
</div> <!-- .content-wrapper -->
</main>