#share-buttons-modal {
  width: 375px;
  
  /* below definitions override Foundation responsive modal code */
  min-height: initial;
  margin: 0 auto;
  padding: 0;
  top:300px;
  left: 0;
  right: 0;
}
#share-buttons-modal a {
  border-right: 1px solid #eee;
  height: 75px;
  width: 18%; /* fix subpixel rendering issue */
  float: left;
  font-size: 60px;
  line-height: 75px;
  text-align: center;
  border-radius: 3px;
}
#share-buttons-modal a:hover {
  background: #f6f6f6;
}
#share-buttons-modal a:focus {
  color: white;
}
#share-buttons-modal a:last-child {
  border-right: none;
}