.cf7-smart-grid.has-grid .wpcf7-submit {

  background: #39b54a;

  border: solid 1px #383838;

  border-radius: 3px;

  font-size: 110%;

  font-weight: 700;

  color: #fff;

}            



.cf7-smart-grid.has-grid .wpcf7-submit:hover {

  background: #39b54a;

  border: solid 1px #383838;

  border-radius: 3px;

  font-size: 110%;

  font-weight: 700;

  color: #fff;

  box-shadow: 1px 2px #888888;

}