h1, h2 {
    color: #00bcd5;
    font-weight: 700;
}

.previous {
    color: #00bcd5;
}

.next {
    color: #00bcd5;
}

.hide {
    display: none !important;
}

.show {
    display: block;
}

.float-right {
    float: right;
}
.sidebar {
    position: fixed;
    right: 0;
    top: 25%;
    margin-top: 120px;
    width: 55px;
    background: #00bcd5;
    padding: 12px 0 12px 0;
    border-radius: 8px 0 0 8px;
    z-index: 999999;
  }
  
  .sidebar {
    display: block;
  }
  
  .sidebar li {
    display: block;
    height: 50px;
    width: 160px;
    padding-left: 17px;
    border-radius: 8px 0 0 8px;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
    -o-transition: all 0.5s;
    transition: all 0.5s;
  }
  
  .sidebar li img {
    display: block;
  }
  
  .sidebar li:hover {
    margin-left: -105px;
    background: #00bcd5;
  }