.topnav {
    width: 100%;
    height: auto;
    overflow: hidden;
    background-color:#9FEB00;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15px;
  }
  
  /* Style the topnav links */
  .topnav a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 14px;
    text-decoration: none;
  }
  /* Change color on hover */
  .topnav a:hover {
    background-color: #002D1A;
    color: red;
  }