Nested block elements
Inline elements
ab
cb
ef
gh
ij
kl
mn
op
qr
st
ab
cb
ef
gh
ij
kl
mn
op
qr
st
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.0 opacity
No opacity