.subscribe-form .input-group {
  display: flex;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.subscribe-form .form-control {
  flex: 1;
  padding: 14px 16px;
  border: none;
  outline: none;
  font-size: 16px;
  border-radius: 0;
}

.subscribe-form .btn-primary {
  background-color: #a21c28;
  color: white;
  border: none;
  padding: 0 20px;
  font-size: 16px;
  cursor: pointer;
  transition: 0.3s ease;
  border-radius: 0;
}

.subscribe-form .btn-primary:hover {
  background-color: #fff;
  color: #a21c28;
  border: 1px solid #a21c28;
  text-decoration: none;
}