#scroll { background: transparent; margin:1em; }  .m23top, .m23bottom {display:block; background:transparent; font-size:1px;}  .m1, .m2, .m3, .m4 {display:block; overflow:hidden;}  .m1, .m2, .m3 {height:1px;}  .m2, .m3, .m4 {background:#ffffff;  border-top:1px solid #000000;  border-bottom:1px solid #000000;  border-left:1px solid #000000;  border-right:1px solid #000000;}  .m1 {margin:0 5px; background:#000000;}  .m2 {margin:0 3px; border-width:0 2px;}  .m3 {margin:0 2px;}  .m4 {height:2px; margin:0 1px;}  .m23content {display:block; background:#ffffff; border:0 solid #000000; border-width:0 1px;}