fix: CSS issues (#660)

* fix: only load styles-home.css on homepage

* feat: try with link tag

* refactor: reorganize homepage css to be more line efficient

* fix: move homepage css to be in homepage mdx

* Revert "fix: move homepage css to be in homepage mdx"

This reverts commit 799446e.

* fix: move .fern-anchor rule to homepage only

* fix: css issue with adjacent sibling selector

---------

Co-authored-by: dslovinsky <dslovinsky@users.noreply.github.com>

Author: dslovinsky