.sidebar a.active {
    background-color: #4CAF50;
    color: white;
}
.topnav {
    overflow: hidden;
    background-color: #333;
  }
  
  .topnav a {
    float: left;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
    display:block;
  }
  @media screen and (max-width: 600px) {
    .topnav a {
      float: none;
      width: 100%;
      display:block;
    }
  }
  .topnav a:hover {
    background-color:#1aaa;
    color: white;
  }
  
  .topnav a.active {
    background-color: #1aaa;
    color: white;
  }
  /* darkmode Switch toggle*/
  .switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
  }
  
  .switch input { 
    opacity: 0;
    width: 0;
    height: 0;
  }
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    -webkit-transition: .4s;
    transition: .4s;
  }

  .slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    -webkit-transition: .4s;
    transition: .4s;
  }

  input:checked + .slider {
    background-color: #2196F3;
  }

  input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
  }

  input:checked + .slider:before {
    -webkit-transform: translateX(26px);
    -ms-transform: translateX(26px);
    transform: translateX(26px);
  }

  /* Rounded sliders */
  .slider.round {
    border-radius: 34px;
  }

  .slider.round:before {
    border-radius: 50%;
  }


  .white{
    color:#000;
    background-color:#fff;
  }
  .dark{
    color:white;
    background-color:black;
  }