<li> margins don't look natural

[shanehou]

Hugo Version: v0.83.1
Build Command: hugo server -D

The <li> style is a bit strange: when li+li has a 20px margin-top, why does the first child has 0px margin-top? The nested <li> would look like this:

See? When nested, the margin is not consistent. The better style in my opinion should be:

Or:

[cntrump]

Fixed: #120