footer {
  text-align: center;
  height: 55px;
  color: #fff;
}

footer:before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  width: 0;
  height: 100%;
  min-height: inherit;
  max-height: inherit;
  padding: 0;
  font-size:11px;

}

.disclaimer { /* the element to center */
  display: inline-block;
  vertical-align: middle;
  color:#444;
  font-size:11px;
  text-decoration:none;
}