.backgroundBar {
/* margin top/bottom: make bar 8px tall (control height = 28, minus 2 * 10 margin) */
/* margin left/right: 1/2 of scrubber thumb width, for overhang. */
.backgroundBar {
/* margin top/bottom: make bar 8px tall (control height = 28, minus 2 * 10 margin) */
/* margin left/right: 1/2 of scrubber thumb width, for overhang. */