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

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