Adding Borders !!!

Hello there,
I wanted to add boarders to
the different elements of the oxygen theme,
the parts of interest are:

* Widgets boarders
* featured slider boarder
* as well as on the “front page” i would like to have two separate borders for RECENT ARTICLES and MORE ARTICLES .

another thing of interest is adding custom shaped border to the primary menu and changing the “/” to something else, how can that be done ?

Also instead of more articles i would like to add posts with featured video instead of plane text .

Please help and
Thanks !!!!!!!!!!!!!!! 🙂