.csc-mailform-field input.csc-mailform-submit {
  background: url('../images/bouton-envoyer.png') no-repeat right;
  width: auto;
  color: none;
  font-weight: bold;
  font-size: 9px;
  border: none;
  padding: 5px 50px 5px;
  margin-left: 330px;
}