padding the space above a css button

I'm trying to add padding to the space above a button created with CSS. The button CSS already has padding in it around the text so if I try to add padding-top it just changes the size of the button rather than move it down closer to the element below it which is what I'm trying to do.

This is the CSS:

button {
  background:    #c00;
  background:    -webkit-linear-gradient(#c00, #600);
  background:    linear-gradient(#c00, #600);
  border-radius: 999px;
  color:         #f6f4f4;
  padding:       10px 100px;
  font:          normal 700 24px/1 "Open Sans", sans-serif;
  text-align:    center;
  text-shadow:   1px 1px 0 #000;
  margin-left: 80px;
}