.googleLogin{
  display: block;
  overflow: hidden;
  white-space: nowrap;
/*margin-left: auto;*/
  margin-right: auto;
  width: 191px;
  height: 46px;
  background-image: url("../images/google_normal.png");

}
.googleLogin:hover{
  background-image: url("../images/google_focus.png");
}
.googleLogin.visited{
  background-image: url("../images/google_pressed.png");
}