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

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