<div class="sidenav right">
  <div class="nav"><div class="icon fa fa-home"></div><div class="description">Home</div></div>
  <div class="nav"><div class="icon fa fa-database"></div><div class="description">About</div></div>
  <div class="nav active"><div class="icon fa fa-users"></div><div class="description">Clients</div></div>
</div>

<div class="content">
  This is the main content.
</div>

@import url(https://fonts.googleapis.com/css?family=Roboto);
@import url(//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css);

* {
  font-family: Roboto;
}

body {
  margin: 0px;
  padding: 0px;
  overflow-x: hidden;
}

  .sidenav {
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: absolute;
    right: 0px;
    top: 0px;
    height: 100%;
    width: 60px;
    background: #333;
  }
  
  
    .sidenav .nav {
      position: relative;
      display: flex;
      align-items: center;
      z-index: 1000;
      left: 0px;
      transition: all 0.4s ease;
      cursor: pointer;
    }

    .sidenav .nav.active {
      left: -10px;
    }

    .sidenav .nav:hover {
      left: -85px;      /* Border width*2 */
    }

      .sidenav .description, .sidenav .icon {
        height: 60px;
        line-height: 60px;
        background: #333;
      }

      .sidenav .nav.active .description, .sidenav .nav.active .icon {
        background: #FF5722;
      }

      .sidenav .icon {
        width: 60px;          /* Width of navbar */
        text-align: center;
        color: #e9e9e9;
        font-size: 25px;
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
      }

      .sidenav .description {
        position: relative;
        left: 60px;
        color: #eee;
        min-width: 80px;
        padding-left: 20px;
        height: 100%;
      }

  .content {
    position: absolute;
    left: 0px;
    top: 0px;
    right: 60px;        /* Width of navbar */
    height: 100%;
    z-index: 10;
    background: #ddd;
  }