.scrollup{
                    width:32px;
                    height:32px;

                    position:fixed;
                    bottom:80px;
                
                        left:49.15%;
                   background-color: red;
                    display:block;
                    text-indent:-9999px;
                    z-index:999999999;
                    background:url(images/up1.png) no-repeat;

                }

                .scrolldown {
                    width:32px;
                    height:32px;

                    position:fixed;
                 
                        left:49.15%;
                   background-color: red;
                    top:50px;
                    display:block;
                    text-indent:-9999px;
                    z-index:999999999;
                    background:url(images/down1.png) no-repeat;

                }