Hi all,

Below is an example to make left side navigation using pure css.

css:

.fa {
    position: relative;
    display: table-cell;
    width: 60px;
    height: 36px;
    text-align: center;
    vertical-align: middle;
    font-size: 18px;
    color: #1299c9;
    z-index: 1;
}
.main-menu:hover{
    width: 250px;
    overflow: visible;
}
.main-menu {
    background: #fbfbfb;
    border-right: 1px solid #e5e5e5;
    position: absolute;
    top: 0;
    bottom: 0;
    height: 100%;
    left: 0;
    width: 60px;
    overflow: hidden;
    -webkit-transition: width .05s linear;
    transition: width .05s linear;
    -webkit-transform: translateZ(0) scale(1, 1);
    z-index: 1000;
}

.main-menu li {
    position: relative;
    display: block;
    width: 250px;
    overflow: hidden;}
.main-menu li a {
 border-collapse: collapse;
    border-spacing: 0;
    color: #999;
    display: block;
    font-family: arial;
    font-size: 14px;
    padding: 10px 10px 10px 60px;
    position: absolute;
    text-decoration: none;
    top: 0;
    transition: all 0.1s linear 0s;
    width: 100%;
}
.main-menu li a:hover{background: #1299c9;color: #fff;}
.main-menu li:hover .fa{color: #fff;}


.main-menu>ul.logout {
    position: absolute;
    left: 0;
    bottom: 0;
}
.no-touch .scrollable.hover {
    overflow-y: hidden;
}
.no-touch .scrollable.hover:hover {
    overflow-y: auto;
    overflow: visible;
}
a:hover, a:focus {
    text-decoration: none;
}

nav ul, nav li {
    outline: 0;
    margin: 0;
    padding: 0;
}
.area {
    float: left;
    background: #e2e2e2;
    width: 100%;
    height: 100%;
}

HTML:

<nav class="main-menu">
  <ul>
        <li> <i class="fa fa-dashboard"></i> <a href="#">Dashboard</a></li>
        <li> <i class="fa fa-truck"></i> <a href="#">Truck</a></li>
        <li> <i class="fa fa-automobile"></i> <a href="#">Automobile</a></li>
        <li> <i class="fa fa-ambulance "></i> <a href="#">Ambulance </a></li>
        <li> <i class="fa fa-cab"></i> <a href="#">Cab </a></li>
        <li> <i class="fa fa-plane"></i> <a href="#">Plane </a></li>
        <li> <i class="fa  fa-fighter-jet"></i> <a href="#"> Fighter jet</a></li>
        <li> <i class="fa fa-space-shuttle"></i> <a href="#">Space Shuttle</a></li>
        <li> <i class="fa fa-motorcycle"></i> <a href="#">Motorcycle</a></li>
        <li> <i class="fa fa-bicycle "></i> <a href="#">Bicycle </a></li>
  </ul>
  <ul class="logout">
    <li> <i class="fa fa-sign-out"></i><a href="#">Logout</a></li>
  </ul>
</nav>

Output : Below is and output generated after using above CSS and HTML code