Negative
margin-top
versus
position:relative
Negative top margin
aaaaaaaaa
bbbbbbbbb
bbbbbbbbb
bbbbbbbb
ccccccccc
ccccccccc
cccccccc
Negative top offset
aaaaaaaaa
bbbbbbbbb
bbbbbbbbb
bbbbbbbb
ccccccccc
ccccccccc
cccccccc