.rtop,.rbottom{display:block;}
.rtop *,.rbottom *{display:block;height: 1px;overflow: hidden}
.r1{margin: 0 5px; font-size:1px;}
.r2{margin: 0 3px; font-size:1px;}
.r3{margin: 0 2px; font-size:1px;}
.r4{margin: 0 1px;height: 2px; font-size:1px;}

.rs1{margin: 0 2px; font-size:1px;}
.rs2{margin: 0 1px; font-size:1px;}