How to add padding at bottom of page

How to add padding at bottom of page

I have a website here
http://trentmcminn.com/
For some reason the bottom of the page (the word Barney) is slightly
cutoff by the fixed position footer. I am trying to add padding to the
bottom of the body by this but it is not doing what I am trying. I am not
sure what is going on. ANy help would be appreciated.
body {
padding-bottom: 100px;
height: 100%;
}