html, body {
    margin: 0;
    padding: 0;
    background-color: #23272A;
    }
   body {
    font-family: 'Gill Sans',sans-serif; 
    font-size: 100%;
    }
   h1 {
    font-size: 200%; 
    color: #fff; 
    text-align: center;
    }
   h2 {
    font-size: 125%; 
    color: #fff; 
    text-align: center;
    }
    h3 {
    font-size: 125%; 
    color: #fff; 
    text-align: left;
    padding: 150px;
    }
   p,ul,li,td {
    color: #fff; 
    }
   a:link {
    color: #fff;
    font-style: italic;
    text-decoration: none;
    text-align: center;
    }
   a:visited {
    color: #fff;
    }
   a:hover {
    color: gray;
    text-decoration: none;
   }
   a:active, a:focus {
    color: gray;
   }
   
   img {
    max-width: 100%;
    height: auto;
  }

  .topnav {
    background-color: #1d2022;
    overflow: hidden;
    text-align: center;
  }
  .topnav a {
    display: inline-block;
    margin : auto;
    color: #fff;
    text-align: center;
    padding: 14px 10%;
    text-decoration: none;
    font-size: 25px;
  }
  .topnav a:hover {
    background-color: #fff;
    color: black;
  }
  .topnav a.active {
    background-color: #3d5ea1;
    color: white;
  }

  footer{
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif; 
    background:#1d2022;
    position:absolute;
    text-align: center;
    bottom:10;
    width:100%; 
    padding-top:10px; 
    padding-bottom: 10px;
    height:50px;
    }