* `ul.simple > li` is also used in front page, where the items are too
sparse now. so we need to restore the default spacing.
* `ul.simple > li > ul > li:last-child` is used to control the spacing
between nested unordered list. we need have more spacing there.
* `div.section > ul > li > p` is added to decrease the spacing of nested
list items.
Signed-off-by: Kefu Chai <kchai@redhat.com>
by default, the user agent's css sets `margin-block-end` of "ul ul" to
"0", which renders the unordered lists in release notes cluttered. as we
are using nested unordered list to present the changes in different
components.
in this change a customized css is added to reset the begin and end
margin of ul to 1em, which is the default value of top level ul.
Signed-off-by: Kefu Chai <kchai@redhat.com>
