body {
  font-family: sans-serif;
  padding: 20px;
  max-width: 700px;
  margin: 0 auto;
}
h1, h2 {
  color: #2c3e50;
}
#login-box {
  background: #f4f4f4;
  padding: 15px;
  border-radius: 8px;
}
input {
  display: block;
  margin: 5px 0;
  padding: 5px;
}
button {
  padding: 6px 12px;
  cursor: pointer;
}