Facebook and twitter icons stacked up?

On our website, the Facebook and Twitter icons are stacked on top of each other. We're using wordpress for the site, and the CSS makes sense, but it isn't updating / doesn't work.

What am I doing wrong?

Heres the CSS:

#fb {
  z-index: 999999;
  bottom: 70px;
  right: 220px;
}
#twitter {
  z-index: 999999;
  bottom: 70px;
  right: 220px;
}

via Chebli Mohamed