           direction: ltr;
                margin-bottom: 20px;
                padding: 100px;
                width: 450px;
            }
            #first-box, #last-box
            {
                color: silver;
            }
            .position
            {
                height: 30px;
                position: absolute;
                width: 30px;
            }
            #tl-control
            {
                border-top: 30px solid red;
                margin-left: -50px;
                