Move doc template styles to CSS files

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Style definition lists

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Style sidebar lists

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>