Add `cursor: pointer` for `details`?
Noticed this on our docs, https://github.com/twbs/bootstrap/blob/v4-dev/docs/4.0/getting-started/introduction.md
/CC @mdo
Noticed this on our docs, https://github.com/twbs/bootstrap/blob/v4-dev/docs/4.0/getting-started/introduction.md
/CC @mdo