a {background-position: inherit }
b {background-position: top }
c {background-position: center }
d {background-position: left }
e {background-position: 12% }
f {background-position: 12em }
g {background-position: 0 }
h {background-position: 12% center}
i {background-position: top left }
j {background-position: left top }
k {background-position: left 50% }
l {background-position: 50px bottom }
m {background-position: top 12% center }
n {background-position: center left 12% }
o {background-position: left 12% top }
p {background-position: left, top, left}
q {background-position: left center, top left, left -42px top 12cm, top 12cm left -42px}
