form.css

header {
  font-size: 2rem;
}

header,
form {
  min-height: 20vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

form input,
form button {
  padding: 0.5rem;
  font-size: 2rem;
  border: none;
  background: white;
  font-family: "Poppins", sans-serif;

  border-radius: 5px;
  border-top-right-radius: 0px;
  border-bottom-right-radius: 0px;
}

form button {
  color: #36d1dc;
  background: #f7fffe;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 0px;

  border-top-right-radius: 5px;
  border-bottom-right-radius: 5px;

  display: flex;
  align-self: stretch;
  justify-content: center;
  align-items: center;
}

form button:hover {
  background: #36d1dc;
  color: white;
}