.btn-success {
  border-radius: 40px;
  background-color: transparent;
  border: 5px solid #87b670;
  text-transform: uppercase;
  font-size: 13px;
  padding: 22px 30px;
  color: #000;
  font-weight: bold;
  letter-spacing: 1px;

  transition: 0.3s;
}
.btn-success:hover,
.btn-success:focus,
.btn-success:active,
.btn-success.active,
.btn-success:hover,
.btn-success:focus,
.btn-success:active,
.btn-success.active,
.btn-success.active.focus,
.btn-success.active:focus,
.btn-success.active:hover,
.btn-success:active.focus,
.btn-success:active:focus,
.btn-success:active:hover {
  color: white;
  background-color: #87b670;
  border-color: #87b670;
}