.divarrondipariez{ background:#ffffff; width:780px; } b.dtop, b.dbas{ display 
:block;background:#F1F1F1; font-size:1px; } b.dtop b, b.dbas b{display:block;height: 
1px; font-size:1px; overflow: hidden; background:#ffffff;} b .r1 {margin: 0 5px 
; font-size:1px;} b.r2{margin: 0 3px ; font-size:1px;} b.r3{margin: 0 2px ; font-size:1px;} 
b.dtop b.r4, b.dbas b.r4{margin: 0 1px;height: 2px; font-size:1px;}