body {
      background-color: lightblue;
    }
    
    .nice {
      font-family: sans-serif;
    }
    
    h1,h2,h3,p {
      text-align: center;
    }
   
    table, th, td {
      border: 1px solid black;
      padding: 5px;
      text-align: center;
    }
    img {
      width: 200px;
      height: 200px;
    }
    table {
      border-spacing: 5;
    }   
    
    .footer {
      <--position: fixed;
      left: 0;
      bottom: 0;-->
      width: 100%;
      /*background-color: rgb(68, 85, 90);*/
      background-color: lightblue;  
      color: green;
      text-align: center;
    }

    a.footer:visited {
       color:#b6c4eb 
    }
    a.footer:link {
       color:#b6c4eb 
    }
    a.footer:hover {
       color:#b6c4eb 
    }
    a.footer:active {
       color:#b6c4eb 
    }

    .ul {
        text-align: center;
        list-style-position: inside;
    }
    
    .topnav {
      width: 728;
      margin:0 auto;
      background-color: lightgreen;
      overflow: hidden;
      text-align: center;
    }
    .topnav a {
      width: 150px;
      float: left;
      color: black;
      padding: 14px 16px;
      text-decoration: none;
      font-size: 17px;
    }
    .topnav a:hover {
        background-color: #ddd;
        color: black;
    }
    .topnav a.active {
      background-color: green;
      color: white;
    }

    #box {
        width: 700px;
        align: center;
        border: 10px solid green;
        padding: 25px;
        margin: 25px auto;
      }
    #boxes {
        width: 500px;
        border: 10px solid green;
        padding: 25px;
        margin: 25px;
      }