body {
  font-family: Arial, sans-serif;
  margin: 2em;
  background: #f4f4f4;
  color: #333;
}

h1 {
  color: #005f73;
}

form > div {
  margin-bottom: 1em;
  background: #fff;
  padding: 1em;
  border-radius: 5px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

button {
  padding: 0.5em 1em;
  background-color: #0a9396;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #00777d;
}

@media (max-width : 600px) {
  body {
    font-size: 16px;
  }
  .container {
    flex-direction: column;
  }
}