.form-content__completed-message {
  padding: 0 20px;
}
.form-content__completed-message > p {
  line-height: 25px;
  text-align: left;
}
.form-content__btn a {
  width: 257px;
}
@media (min-width: 768px) {
  .form-content__completed-message > p {
    text-align: center;
  }
  .form-content__btn a {
    width: 300px;
  }
}