Use card class for BPM display
This MR changes the BPM display to use the .card class instead of .frame and .view. This is more consistent with the HIG, but is overall a small visual change (larger corner radius, shadow instead of outline).
This MR changes the BPM display to use the .card class instead of .frame and .view. This is more consistent with the HIG, but is overall a small visual change (larger corner radius, shadow instead of outline).