nd-color: #E7E7E7;
            border: solid gray 1px;
            float: right;
            cursor: pointer;
        }
        #contentFrame {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }
        #attribution {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            text-align: center;
            padding: 10px;
            font-weight: bold;
            font-size: 