.sign_in__link {
  color: #002d72;
  border-bottom: 1px solid #002d72;
}
.sign_in__link:hover {
  color: #002d72;
  opacity: 0.5;
  border: none;
}

.btn.sign_up__btn {
  background-color: #002d72;
  color: white;
  font-weight: bold;
}
.btn.sign_up__btn:hover {
  background-color: #002d72;
  opacity: 0.5;
}