I need help with CSS to make the following changes:
1) Reduce the thickness of the white bars under each title in the sidebar like 'Follow my blog', 'Archive' etc
2) Remove white lines above and below every comment.
3) Remove the grey bar above the first comment.
4) Change the font size and style of the titles of widgets like 'Archive', 'Follow my blog' etc
Thanks in advance!
The blog I need help with is udaynarayanan.com.