Body {
        Background-color: #00CED1;
     }
     div {
       background-color: #F0FFF0;
       border-radius: 5px;
       font-size: 50px;
     }
    .topbar {
       background-color: silver;
       font-size: 30px;
       font-weight: bold;
       margin: 5px;
     }
     .sidebar {
       width:20%;
       display: inline-block;
       vertical-align:top;
       margin:5px;
       color: gray;
     }
      .container{
       width:70%;
       display:inline-block;
       vertical-align:top;
       margin:5px;