 #main2,
            #main3 {
                width: 90%;
                height: 200px;
                margin: 20px;
                padding: 0;
            }
            #main2 {
                width: 75%;
            }
            #main3 {
                width: 50%;
            }
            #middle {
                text-align: center;
                padding: 10px;
                background: #d4e8f1;
            }
        </style>
        <div id="main"></div>
        <div id="main2"></div>
       