body{
            font-family: Arial;
            background-image: url(Background.png);
            background-repeat: no-repeat;
            background-attachment: fixed;  
            background-size: cover;
            margin: 0;
            font-size: 18;
        }
        h3{
            color: aqua;
            font-size: 25;
            text-align: center;
        }
        h4{
            color: blue;
            font-size: 20;
            text-align: center;
        }
        p{
            color: white;
            font-size: 17;
            text-align: center;
            font-style: normal
        }
        a{
            cursor: pointer;
            animation-name: fadeouta;
            animation-duration: 1s;
            color: aquamarine;
            font-size: 18;
            text-align: center;
            font-style: normal;
        }
        a:hover{
            cursor: pointer;
            color: whitesmoke;
            font-size: 18;
            text-align: center;
            font-style: normal;
        }
        div{
            visibility: visible;
        }
        .hide{
            color: #2fe300;
        }
        .topnav {
            overflow: hidden;
            background-color: #333;
            text-align: center;
            padding: 5px;
          }
          
          .topnav a {
            float: inline-end;
            color: #f2f2f2;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
            font-size: 17px;
          }
          
          .topnav a.active {
            background-color: #04AA6D;
            color: white;
          }
          .topnav a:hover{
            color: #202020;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
            font-size: 17px;
            background-color: #f2f2f2;
          }
          .topnav button {
            float: inline-end;
            color: #f2f2f2;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
            font-size: 17px;
          }
        .topnav button:hover{
            color: #202020;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
            font-size: 17px;
            background-color: #f2f2f2;
          }